Guelph

¹ American  

[gwelf] / gwɛlf /

Or Guelf

noun

1. a member of the political party in medieval Italy and Germany that supported the sovereignty of the papacy against the German emperors: opposed to the Ghibellines.

2. a member of a secret society in Italy in the early 19th century that opposed foreign rulers and reactionary ideas.

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Guelph ² American  

[gwelf] / gwɛlf /

noun

1. a city in SE Ontario, in S Canada.

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Guelph ¹ British  

/ ɡwɛlf /

noun

1. a member of the political faction in medieval Italy that supported the power of the pope against the German emperors Compare Ghibelline

2. a member of a secret society in 19th-century Italy opposed to foreign rule

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Guelph ² British  

/ ɡwɛlf /

noun

1. a city in Canada, in SE Ontario. Pop: 106 920 (2001)

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Other Word Forms

• Guelfic adjective
• Guelfism noun
• Guelphic adjective
• Guelphism noun

Etymology

Origin of Guelph

1570–80; < Italian Guelfo < Middle High German Welf name of founder of a princely German family

Example Sentences

For 21-year-old Vedant Vyas, this meant taking an indefinite leave from the University of Guelph in Ontario, Canada, last April so he could work full-time on his AI startup, Opennote.

From The Wall Street Journal • Mar. 22, 2026

Avocados may also help people manage obesity and even prevent diabetes, according to researchers at the University of Guelph, near Toronto.

From MarketWatch • Feb. 7, 2026

Michael von Massow, a professor of agriculture at Guelph University, said fruit juice prices have risen 7.5% from last year due to counter measures on American citrus.

From BBC • Aug. 1, 2025

The effort "amps collaboration up to a new level," said Stuart McCook, a historian at the University of Guelph in Ontario who studies coffee and other tropical commodities and who is not involved in Innovea.

From Salon • Jul. 24, 2024

The draft started with a recital of the grievances of the colony against "George Guelph King of Great Britain", which Jefferson was to utilize in the Declaration of Independence.

From Thomas Jefferson The Apostle of Americanism by Chinard, Gilbert