Dictionary.com Thesaurus.com

quasquicentennial

American

[kwos-kwi-sen-ten-ee-uhl] / ˌkwɒs kwɪ sɛnˈtɛn i əl /

adjective

pertaining to or marking a period of 125 years.

noun

a 125th anniversary.
a celebration marking such an anniversary.

Etymology

Origin of quasquicentennial

quasqui- “one and a quarter” ( pseudo-Latin, apparently qua(dri-) + (se)squi- ) + centennial ( def. )

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.