Ontario

See also: Ontário

English

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontario

Probably from Wyandot ontari꞉io (literally “great lake”). If so, ultimately from Proto-North Iroquoian *-õtaɹeʔ and Proto-Iroquoian * -õːtaɹiʔ. The Canadian province and New York county were named after the lake.

Pronunciation

• (Received Pronunciation) IPA^(key): /ɒnˈtɛə.ɹi.əʊ/
• (General American, US) IPA^(key): /ɑnˈtɛəɹ.i.oʊ/
• (Canada) IPA^(key): /ɒnˈtɛə.ɹi.o/, /ɒnˈtæɹ.i.o/

• Audio (Canada):

  (file)

• Hyphenation: On‧tar‧io

Proper noun

Ontario

2. A province in eastern Canada. Capital: Toronto.

   Synonyms: Province of Ontario, Ont., Ont, ON, ON., On, On., ONT, ONT.

   • 2025 February 2, Nadine Yousif, “Canadian fans boo US anthem as tariffs spur 'buy local' pledge”, in BBC News‎^[1], archived from the original on 5 August 2025:

     In some Canadian provinces - namely Ontario, the largest by population - American booze will be pulled off the shelves indefinitely starting on Tuesday.

4. A large lake in North America, between the Canadian province of Ontario and the American state of New York; one of the Great Lakes.

   Synonyms: Lake Ontario, Lake America

5. A village in the Cayo District, Belize.
6. A number of places in the United States:
   2. A city in San Bernardino County, California.
   3. A township and unincorporated community therein, in Knox County, Illinois.
   4. An unincorporated community in Lima Township, LaGrange County, Indiana.
   5. A community in Ames, Story County, Iowa.
   6. A town, hamlet, and census-designated place in Wayne County, New York.
   7. Ellipsis of Ontario County, New York.
   9. A city in Richland County, Ohio.
   11. A city in Malheur County, Oregon.
       • 2021 February 9, Tony Lange, “The Border-Town Effect: Dispensaries Boom on State Line”, in Cannabis Business Times‎^[2], archived from the original on 19 February 2021:

         Dan Cummings, the community development director in Ontario, Ore., a city of roughly 11,000 people in the eastern part of the state, had spent some early mornings at his office in the days leading up to that clatter. […] Four years earlier, when Oregonians approved Measure 91 to legalize cannabis cultivation and adult-use statewide during the 2014 general election, residents in Malheur County, where Ontario is located, were on the other side, voting 68.3% against that measure.

   12. A populated place in North Bethlehem Township, Washington County, Pennsylvania.
   13. A populated place in Charlotte County, Virginia.
   14. A village in Vernon County, Wisconsin.
7. Ellipsis of Ontario Township
8. Ellipsis of Ontario County

Derived terms

• Lake Ontario
• Ontarian
• Ontario County
• Ontario Lacus
• Ontario Township
• Ontario violet
• (province): ON, ON., Ont., Ont, On, On., ONT., ONT
• Province of Ontario

Translations

lake between the province of Ontario and the state of New York — see also Lake Ontario

• Armenian: Օնտարիո (Ōntario)
• Bulgarian: Онта́рио n (Ontário)
• Chinese:

  Cantonese: 安大略 (on¹ daai⁶ loek⁶), 安大略湖 (on¹ daai⁶ loek⁶ wu⁴)

  Mandarin: 安大略 (Āndàlüè), 安大略湖 (zh) (Āndàlüè Hú)

• Dutch: Ontariomeer
• Finnish: Ontariojärvi
• French: Ontario (fr) m
• Georgian: ონტარიო (onṭario)
• Greek: Οντάριο n (Ontário)
• Inuktitut: ᐋᓐᑎᐅᕆᐅ (aantiorio), ᐋᓐᑎᐅᕆᔪ (aantioriyo)
• Japanese: オンタリオ湖 (Ontario-ko)
• Lao: ທະເລສາບອອນແທ​ຣິໂອ (tha lē sāp ʼǭn thǣ ri ʼō)
• Macedonian: Онта́рио n (Ontário)
• Marathi: ऑन्टारियो (ŏnṭāriyo)
• Ojibwe: Onderi'oo
• Polish: Ontario (pl) n
• Portuguese: Ontário (pt) m
• Russian: Онта́рио (ru) n (Ontário)
• Spanish: Ontario (es) m
• Swedish: Ontariosjön c
• Thai: ทะเลสาบออนแทรีโอ (tá-lee-sàap ontaereeoh)

province in eastern Canada

• Amharic: ኦንቴሪዮ (ʾonteriyo)
• Arabic: أُونْتَارْيُو m (ʔuntāryū)
• Armenian: Օնտարիո (Ōntario)
• Azerbaijani: Ontario
• Belarusian: Анта́рыё m or f (Antáryjo)
• Bengali: অন্টারিও (bn) (onṭariō)
• Bulgarian: Онта́рио n (Ontário)
• Burmese: အွန်တေးရီးယိုး (wante:ri:yui:)
• Catalan: Ontàrio m
• Chinese:

  Cantonese: 安大略 (on¹ daai⁶ loek⁶), 安大略省 (on¹ daai⁶ loek⁶ saang²), 安省 (on¹ saang²) (short form)

  Mandarin: 安大略 (Āndàlüè), 安大略省 (zh) (Āndàlüè Shěng), 安省 (zh) (Ān Shěng) (short form)

• Czech: Ontario (cs)
• Dutch: Ontario n
• Estonian: Ontario (et)
• Finnish: Ontario (fi)
• French: Ontario (fr) m
• Frisian:

  West Frisian: Ontario n

• Georgian: ონტარიო (onṭario)
• German: Ontario (de) n
• Greek: Οντάριο n (Ontário)
• Hebrew: אוֹנְטַרִיוֹ (ontario)
• Hindi: ओन्टारियो (onṭāriyo), ओंटेरियो (õṭeriyo)
• Hungarian: Ontario (hu)
• Icelandic: Ontario, Ontaríó
• Inuktitut: ᐋᓐᑎᐅᕆᐅ (aantiorio), ᐋᓐᑎᐅᕆᔪ (aantioriyo)
• Irish: Ontáirio m
• Italian: Ontario (it) m
• Jamaican Creole: Antierio
• Japanese: オンタリオ (ja) (Ontario)
• Kannada: ಒಂಟಾರಿಯೊ (oṇṭāriyo)
• Kazakh: Онтарио (Ontarıyo)
• Khmer: អនតារីយ៉ូ (ʼɑɑntaariiyou)
• Korean: 온타리오 (Ontario)
• Kurdish:

  Central Kurdish: ئانتاریۆ (antaryo)

• Lao: ອອນແທ​ຣິໂອ (ʼǭn thǣ ri ʼō)
• Latvian: Ontārio
• Lithuanian: Ontarijas
• Macedonian: Онта́рио n (Ontário)
• Malayalam: ഒണ്ടാറിയോ (oṇṭāṟiyō)
• Marathi: ऑन्टारियो (ŏnṭāriyo)
• Mongolian: Онта́рио (Ontário)
• Norwegian:

  Bokmål: Ontario

  Nynorsk: Ontario

• Occitan: Ontàrio m
• Ojibwe: Onderi'oo
• Persian: انتاریو (oṇṭâreyo)
• Polish: Ontario (pl) n
• Portuguese: Ontário (pt)
• Romanian: Ontario
• Russian: Онта́рио (ru) m or f (Ontário)
• Serbo-Croatian:

  Cyrillic: Онта̑рио m

  Latin: Ontȃrio (sh) m

• Slovak: Ontario
• Spanish: Ontario (es) m
• Swedish: Ontario (sv) n
• Tamil: ஒன்றாரியோ (oṉṟāriyō)
• Telugu: అంటారియో (aṇṭāriyō)
• Thai: รัฐออนแทรีโอ (rát ɔɔn-tɛɛ-rii-oo), ออนแทรีโอ (ɔɔn-tɛɛ-rii-oo)
• Turkish: Ontario
• Ukrainian: Онта́ріо m or f (Ontário)
• Urdu: انٹاریو (oṇṭāriyo)
• Uzbek: Ontario
• Vietnamese: Ôn-ta-ri-ô
• Yiddish: אָנטעריאָ (onteryo)

Anagrams

• Troiano, oration

Czech

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontariobor.

Czech Ontario

Borrowed from English Ontario.

Pronunciation

• IPA^(key): [ˈontarɪjo]

Proper noun

Ontario n (relational adjective ontarijský)

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Declension

Declension of Ontario (sg-only semisoft neuter)

	singular
nominative	Ontario
genitive	Ontaria
dative	Ontariu
accusative	Ontario
vocative	Ontario
locative	Ontariu
instrumental	Ontariem

Further reading

• “Ontario”, in Internetová jazyková příručka (in Czech), 2008–2026

Esperanto

Ontario

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontariobor.

Esperanto Ontario

Borrowed from English Ontario.

Pronunciation

• IPA^(key): /ontaˈrio/
• Rhymes: -io
• Syllabification: On‧ta‧ri‧o

Proper noun

Ontario (accusative Ontarion)

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

   Holonym: Kanado

See also

	Hudsona Golfo
Manitobo		Kebekio
	Usono

Further reading

• “Ontario”, in Plena Ilustrita Vortaro de Esperanto [Complete Illustrated Dictionary of Esperanto], 2020, →ISBN
• “Ontario”, in Reta Vortaro [Online Dictionary] (in Esperanto), 1997-2026

Finnish

Etymology

Borrowed from English Ontario

Pronunciation

• IPA^(key): /ˈontɑrio/, [ˈo̞n̪t̪ɑ̝ˌrio̞]
• IPA^(key): /ˈonteːrio/, [ˈo̞n̪t̪e̞ːˌrio̞]
• Rhymes: -io
• Syllabification^(key): On‧ta‧ri‧o
• Hyphenation^(key): On‧ta‧rio

Proper noun

Ontario

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Declension

Inflection of Ontario (Kotus type 3/valtio, no gradation)
nominative		Ontario	—
genitive		Ontarion	—
partitive		Ontariota	—
illative		Ontarioon	—
		singular	plural
nominative		Ontario	—
accusative	nom.	Ontario	—
	gen.	Ontarion
genitive		Ontarion	—
partitive		Ontariota	—
inessive		Ontariossa	—
elative		Ontariosta	—
illative		Ontarioon	—
adessive		Ontariolla	—
ablative		Ontariolta	—
allative		Ontariolle	—
essive		Ontariona	—
translative		Ontarioksi	—
abessive		Ontariotta	—
instructive		—	—
comitative		See the possessive forms below.

Possessive forms of Ontario (Kotus type 3/valtio, no gradation)

first-person singular possessor singular plural nominative Ontarioni — accusative nom. Ontarioni — gen. Ontarioni genitive Ontarioni — partitive Ontariotani — inessive Ontariossani — elative Ontariostani — illative Ontariooni — adessive Ontariollani — ablative Ontarioltani — allative Ontariolleni — essive Ontarionani — translative Ontariokseni — abessive Ontariottani — instructive — — comitative — — second-person singular possessor singular plural nominative Ontariosi — accusative nom. Ontariosi — gen. Ontariosi genitive Ontariosi — partitive Ontariotasi — inessive Ontariossasi — elative Ontariostasi — illative Ontarioosi — adessive Ontariollasi — ablative Ontarioltasi — allative Ontariollesi — essive Ontarionasi — translative Ontarioksesi — abessive Ontariottasi — instructive — — comitative — — first-person plural possessor singular plural nominative Ontariomme — accusative nom. Ontariomme — gen. Ontariomme genitive Ontariomme — partitive Ontariotamme — inessive Ontariossamme — elative Ontariostamme — illative Ontarioomme — adessive Ontariollamme — ablative Ontarioltamme — allative Ontariollemme — essive Ontarionamme — translative Ontarioksemme — abessive Ontariottamme — instructive — — comitative — — second-person plural possessor singular plural nominative Ontarionne — accusative nom. Ontarionne — gen. Ontarionne genitive Ontarionne — partitive Ontariotanne — inessive Ontariossanne — elative Ontariostanne — illative Ontarioonne — adessive Ontariollanne — ablative Ontarioltanne — allative Ontariollenne — essive Ontarionanne — translative Ontarioksenne — abessive Ontariottanne — instructive — — comitative — — third-person possessor singular plural nominative Ontarionsa — accusative nom. Ontarionsa — gen. Ontarionsa genitive Ontarionsa — partitive Ontariotaan Ontariotansa — inessive Ontariossaan Ontariossansa — elative Ontariostaan Ontariostansa — illative Ontarioonsa — adessive Ontariollaan Ontariollansa — ablative Ontarioltaan Ontarioltansa — allative Ontariolleen Ontariollensa — essive Ontarionaan Ontarionansa — translative Ontariokseen Ontarioksensa — abessive Ontariottaan Ontariottansa — instructive — — comitative — —

French

Etymology

Probably from Wyandot ontari:io (literally “great lake”).

Pronunciation

• IPA^(key): /ɔ̃.ta.ʁjo/

Proper noun

Ontario m

1. Ontario (all senses):
   1. Ontario (a province in eastern Canada)
   2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)
   3. Ontario (a city in San Bernardino County, California)
   4. Ontario (a city in Richland County, Ohio)
   5. Ontario (a city in Malheur County, Oregon)

German

Etymology

Borrowed from English Ontario

Pronunciation

• IPA^(key): /ɔnˈtaːʁio/

• Audio (Germany (Berlin)):

  (file)

Proper noun

Ontario n (proper noun, strong, genitive Ontarios)

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

   Synonym: Ontariosee

Hungarian

Ontario

Etymology

Borrowed from English Ontario

Pronunciation

• IPA^(key): [ˈontaːrijoː]
• Hyphenation: On‧ta‧rio
• Rhymes: -joː

Proper noun

Ontario

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Declension

Inflection of Ontario

	singular	plural
nominative	Ontario	—
accusative	Ontariót	—
dative	Ontariónak	—
instrumental	Ontarióval	—
causal-final	Ontarióért	—
translative	Ontarióvá	—
terminative	Ontarióig	—
essive-formal	Ontarióként	—
essive-modal	—	—
inessive	Ontarióban	—
superessive	Ontarión	—
adessive	Ontariónál	—
illative	Ontarióba	—
sublative	Ontarióra	—
allative	Ontarióhoz	—
elative	Ontarióból	—
delative	Ontarióról	—
ablative	Ontariótól	—
non-attributive possessive – singular	Ontarióé	—
non-attributive possessive – plural	Ontarióéi	—

Possessive forms of Ontario

possessor	single possession	multiple possessions
1st person sing.	Ontarióm	—
2nd person sing.	Ontariód	—
3rd person sing.	Ontariója	—
1st person plural	Ontariónk	—
2nd person plural	Ontariótok	—
3rd person plural	Ontariójuk	—

Derived terms

• Ontario-tó
• ontariói

Japanese

Romanization

Ontario

1. Rōmaji transcription of オンタリオ

Latin

Pronunciation

• (Classical Latin) IPA^(key): [ɔnˈta.ri.oː]
• (modern Italianate Ecclesiastical) IPA^(key): [onˈtaː.ri.o]

Proper noun

Ontariō f sg (genitive Ontariōnis); third declension

1. (New Latin) Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Declension

Third-declension noun, with locative, singular only.

	singular
nominative	Ontariō
genitive	Ontariōnis
dative	Ontariōnī
accusative	Ontariōnem
ablative	Ontariōne
vocative	Ontariō
locative	Ontariōnī Ontariōne

Polish

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontariobor.

Polish Ontario

Borrowed from English Ontario.

Pronunciation

• IPA^(key): /ɔnˈta.rjɔ/

• Audio:

  (file)

• Rhymes: -arjɔ
• Syllabification: On‧ta‧rio

Proper noun

Ontario n (indeclinable)

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Further reading

• “Ontario”, in Polish dictionaries at PWN‎^[3] (in Polish)

Portuguese

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontariobor.

Portuguese Ontario

Borrowed from English Ontario.

Proper noun

Ontario m

1. alternative spelling of Ontário

Proper noun

Ontario f

1. alternative spelling of Ontário

Romanian

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontariobor.

Romanian Ontario

Borrowed from English Ontario.

Proper noun

Ontario ?

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Serbo-Croatian

Etymology

Borrowed from English Ontario.

Pronunciation

• IPA^(key): /ontâːrio/

Proper noun

Ontȃrio n (Cyrillic spelling Онта̑рио)

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Spanish

Ontario

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontariobor.

Spanish Ontario

Borrowed from English Ontario.

Pronunciation

• IPA^(key): /onˈtaɾjo/ [õn̪ˈt̪a.ɾjo]
• Rhymes: -aɾjo
• Syllabification: On‧ta‧rio

Proper noun

Ontario f

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Related terms

• ontariano

Turkish

Etymology

Etymology tree

Proto-Iroquoian *-õːtaɹiʔ

Proto-North Iroquoian *-õtaɹeʔ

Wyandot ontari꞉iobor.?

English Ontariobor.

Turkish Ontario

Borrowed from English Ontario.

Proper noun

Ontario

1. Ontario (a province in eastern Canada)
2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)