Ontario

On·tar·io
O1N1T1A1R1I1O1
UK/ɒnˈtɛə.ɹi.əʊ/US/ɑnˈtɛəɹ.i.oʊ/Canada/ɒnˈtɛə.ɹi.o/Canada/ɒnˈtæɹ.i.o/

proper noun

A province in eastern Canada. Capital: Toronto.

Similar
Very commonScrabble 7

Meanings

proper noun
  1. A province in eastern Canada. Capital: Toronto.

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

    2025 February 2, Nadine Yousif, “Canadian fans boo US anthem as tariffs spur 'buy local' pledge”, in BBC News, archived from the original on 05 Aug 2025

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

  2. 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

  3. A number of places in the United States:
    1. abbreviationellipsisEllipsis of Ontario County, New York.
    2. A city in Malheur County, Oregon.
      1 more example

      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.

      2021 February 9, Tony Lange, “The Border-Town Effect: Dispensaries Boom on State Line”, in Cannabis Business Times, archived from the original on 19 Feb 2021
    3. A populated place in North Bethlehem Township, Washington County, Pennsylvania.
    4. A populated place in Charlotte County, Virginia.
  4. abbreviationellipsisEllipsis of Ontario Township
  5. abbreviationellipsisEllipsis of Ontario County

Synonyms & antonyms

proper nounA province in eastern Canada. Capital: Toronto.

Similar
Province of OntarioOnt.OntONON.OnOn.ONTONT.

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

Also see

Origin

  1. Proto-Iroquoian* -õːtaɹiʔ
  2. Proto-North Iroquoian*-õtaɹeʔ
  3. Wyandotontari꞉io
  4. EnglishOntario

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.

Full word history & related roots →

Translations

Arabic أُونْتَارْيُو
  • أُونْتَارْيُو (ʔuntāryū)province in eastern Canada
Bengali অন্টারিও
  • অন্টারিও (onṭariō)province in eastern Canada
Bulgarian Онта́рио, Онта́рио
  • Онта́рио (Ontário)province in eastern Canada
  • Онта́рио (Ontário)lake between Ontario province and New York State — see also Lake Ontario
Catalan Ontàrio
  • Ontàrioprovince in eastern Canada
Chinese Cantonese 安大略, 安大略省
  • 安大略 (on¹ daai⁶ loek⁶)province in eastern Canada
  • 安大略省 (on¹ daai⁶ loek⁶ saang²)province in eastern Canada
  • 安省 (on¹ saang²)province in eastern Canada
  • 安大略 (on¹ daai⁶ loek⁶)lake between Ontario province and New York State — see also Lake Ontario
  • 安大略湖 (on¹ daai⁶ loek⁶ wu⁴)lake between Ontario province and New York State — see also Lake Ontario
Chinese Mandarin 安大略, 安大略省
  • 安大略 (Āndàlüè)province in eastern Canada
  • 安大略省 (Āndàlüè Shěng)province in eastern Canada
  • 安省 (Ān Shěng)province in eastern Canada
  • 安大略 (Āndàlüè)lake between Ontario province and New York State — see also Lake Ontario
  • 安大略湖 (Āndàlüè Hú)lake between Ontario province and New York State — see also Lake Ontario
Czech Ontario
  • Ontarioprovince in eastern Canada
Dutch Ontario, Ontariomeer
  • Ontarioprovince in eastern Canada
  • Ontariomeerlake between Ontario province and New York State — see also Lake Ontario
Estonian Ontario
  • Ontarioprovince in eastern Canada
Finnish Ontario, Ontariojärvi
  • Ontarioprovince in eastern Canada
  • Ontariojärvilake between Ontario province and New York State — see also Lake Ontario
French Ontario, Ontario
  • Ontarioprovince in eastern Canada
  • Ontariolake between Ontario province and New York State — see also Lake Ontario
German Ontario
  • Ontarioprovince in eastern Canada
Greek Οντάριο, Οντάριο
  • Οντάριο (Ontário)province in eastern Canada
  • Οντάριο (Ontário)lake between Ontario province and New York State — see also Lake Ontario
Hebrew אוֹנְטַרִיוֹ
  • אוֹנְטַרִיוֹ (ontario)province in eastern Canada
Hindi ओन्टारियो, ओंटेरियो
  • ओन्टारियो (onṭāriyo)province in eastern Canada
  • ओंटेरियो (õṭeriyo)province in eastern Canada
Hungarian Ontario
  • Ontarioprovince in eastern Canada
Icelandic Ontario, Ontaríó
  • Ontarioprovince in eastern Canada
  • Ontaríóprovince in eastern Canada
Irish Ontáirio
  • Ontáirioprovince in eastern Canada
Italian Ontario
  • Ontarioprovince in eastern Canada
Japanese オンタリオ, オンタリオ湖
  • オンタリオprovince in eastern Canada
  • オンタリオ湖 (Ontario-ko)lake between Ontario province and New York State — see also Lake Ontario
Korean 온타리오
  • 온타리오province in eastern Canada
Latvian Ontārio
  • Ontārioprovince in eastern Canada
Lithuanian Ontarijas
  • Ontarijasprovince in eastern Canada
Norwegian Bokmål Ontario
  • Ontarioprovince in eastern Canada
Persian انتاریو
  • انتاریو (oṇṭâreyo)province in eastern Canada
Polish Ontario, Ontario
  • Ontarioprovince in eastern Canada
  • Ontariolake between Ontario province and New York State — see also Lake Ontario
Portuguese Ontário, Ontário
  • Ontárioprovince in eastern Canada
  • Ontáriolake between Ontario province and New York State — see also Lake Ontario
Romanian Ontario
  • Ontarioprovince in eastern Canada
Russian Онта́рио, Онта́рио
  • Онта́рио (Ontário)province in eastern Canada
  • Онта́рио (Ontário)lake between Ontario province and New York State — see also Lake Ontario
Slovak Ontario
  • Ontarioprovince in eastern Canada
Spanish Ontario, Ontario
  • Ontarioprovince in eastern Canada
  • Ontariolake between Ontario province and New York State — see also Lake Ontario
Swedish Ontario, Ontariosjön
  • Ontarioprovince in eastern Canada
  • Ontariosjönlake between Ontario province and New York State — see also Lake Ontario
Tamil ஒன்றாரியோ
  • ஒன்றாரியோ (oṉṟāriyō)province in eastern Canada
Thai รัฐออนแทรีโอ, ออนแทรีโอ
  • รัฐออนแทรีโอ (rát ɔɔn-tɛɛ-rii-oo)province in eastern Canada
  • ออนแทรีโอ (ɔɔn-tɛɛ-rii-oo)province in eastern Canada
  • ทะเลสาบออนแทรีโอ (tá-lee-sàap ontaereeoh)lake between Ontario province and New York State — see also Lake Ontario
Turkish Ontario
  • Ontarioprovince in eastern Canada
Ukrainian Онта́ріо
  • Онта́ріо (Ontário)province in eastern Canada
Urdu انٹاریو
  • انٹاریو (oṇṭāriyo)province in eastern Canada
Vietnamese Ôn-ta-ri-ô
  • Ôn-ta-ri-ôprovince in eastern Canada
Yiddish אָנטעריאָ
  • אָנטעריאָ (onteryo)province in eastern Canada

Rhymes & wordplay

Anagrams

Cite this entry
APA

Ontario. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/Ontario

MLA

“Ontario.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Ontario. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “Ontario,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/Ontario.

Source: Ontario on Wiktionary, CC BY-SA 4.0.