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quatercentennial

American

[kwot-er-sen-ten-ee-uhl] / ˌkwɒt ər sɛnˈtɛn i əl /

adjective

pertaining to or marking a period of 400 years.

Etymology

Origin of quatercentennial

1960–65; < Latin quater four times + centennial

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.