Ottawa

American  

[ot-uh-wuh] / ˈɒt ə wə /

noun

plural

Ottawas,

plural

Ottawa

1. a city in and the capital of Canada, in southeastern Ontario.

2. a river in southeastern Canada, flowing southeast along the boundary between Ontario and Quebec into the St. Lawrence River at Montreal. 685 miles (1,105 kilometers) long.

3. a city in northeastern Illinois, southwest of Chicago.

4. a town in eastern Kansas.

5. Also called Odawa.  a member of a tribe of Algonquian people of Canada, forced into the Lake Superior and Lake Michigan regions by the Iroquois confederacy.

6. Also called Odawa.  the Ojibwe language as used by the Ottawa.

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Ottawa British  

/ ˈɒtəwə /

noun

1. the capital of Canada, in E Ontario on the Ottawa River: name changed from Bytown to Ottawa in 1854. Pop: 774 072 (2001)

2. a river in central Canada, rising in W Quebec and flowing west, then southeast to join the St Lawrence River as its chief tributary at Montreal; forms the border between Quebec and Ontario for most of its length. Length: 1120 km (696 miles)

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Ottawa Cultural  

1. Capital of Canada, located in southeastern Ontario across the Ottawa River from Quebec.

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Etymology

Origin of Ottawa

First recorded in 1660–70; from French Outaouan, or directly from Ojibwe Ota·wa· “traders”

Example Sentences

By 2015, the girls needed a better ballet school than was available in Ottawa.

From Los Angeles Times • Mar. 30, 2026

On Monday, the Supreme Court will begin a four-day hearing in Ottawa on a constitutional challenge to Bill 21.

From BBC • Mar. 21, 2026

This article is adapted from a speech he delivered to the Energy Security Forum March 9 in Ottawa.

From The Wall Street Journal • Mar. 20, 2026

Thomas Juneau, a professor at the University of Ottawa, told AFP that "the system is resilient and it remains able to implement well-developed contingency plans".

From Barron's • Mar. 14, 2026

Zizmo drives through the gloom, past the octagonal gazebos and the monument of the Civil War Hero, and into the woods where the Ottawa once held their summer camp.

From "Middlesex: A Novel" by Jeffrey Eugenides