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Definitions

waterloo

[waw-ter-loo, wot-er-, waw-ter-loo, wot-er-, vah-tuhr-loh] / ˈwɔ tərˌlu, ˈwɒt ər-, ˌwɔ tərˈlu, ˌwɒt ər-, ˈvɑ tərˌloʊ /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Julian Prosia, a 31-year-old optometrist in Waterloo, Ontario, was living a healthy life when he and his wife started planning for a baby.

From The Wall Street Journal • Apr. 7, 2026

Elsewhere on the railway, there will be a reduced service between London Waterloo and Clapham Junction due to the renewal of switches and crossings.

From BBC • Apr. 2, 2026

When Jay Liang, 19, a sophomore at the University of Waterloo in Ontario, started working with Kalshi to recruit new users, he hired his classmate to make a social-media post.

From The Wall Street Journal • Mar. 6, 2026

"Using synthetic biology, we built something like an electrical circuit, but instead of wires we used pieces of DNA," said Dr. Brian Ingalls, a professor of applied mathematics at Waterloo.

From Science Daily • Feb. 24, 2026

They had to answer one more question: What is the origin of the phrase, "to meet one's Waterloo" and what does it mean?

From "The View From Saturday" by E.L. Konigsburg