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Gaius

American  
[gey-uhs] / ˈgeɪ əs /

noun

  1. a.d. c110–c180, Roman jurist and writer, especially on civil law.

  2. Caius.


Gaius British  
/ ˈɡaɪəs /

noun

  1. ?110–?180 ad , Roman jurist. His Institutes were later used as the basis for those of Justinian

  2. Gaius Caesar. See Caligula

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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.

The most notorious ancient collector was the Roman magistrate Gaius Verres, the governor of Sicily in the 70s B.C.

From The Wall Street Journal • Oct. 24, 2025

For instance, around the onset of the first millennium, Gaius Julius Hyginus, librarian for Roman emperor Augustus, noted that Betelgeuse was a yellow color comparable to Saturn.

From Scientific American • Aug. 18, 2022

Her father, Gaius Bolin, was a lawyer and tried to dissuade his daughter from the aggravations of the legal profession.

From Washington Post • Feb. 26, 2022

The fourth of the 12 Caesars, Caligula — officially, Gaius Julius Caesar Germanicus — was a capricious, combustible first-century populist remembered, perhaps unfairly, as the empire’s most tyrannical ruler.

From New York Times • Jan. 12, 2021

His full name was Gaius Vitellius Reticulus, but the other cohorts called him Vitellius the Ridiculous.

From "The Son of Neptune" by Rick Riordan