Dictionary.com

sesquicentennial

[ ses-kwi-sen-ten-ee-uhl ]
/ ˌsɛs kwɪ sɛnˈtɛn i əl /
Save This Word!

adjective
pertaining to or marking the completion of a period of 150 years.
noun
a 150th anniversary or its celebration.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.

Origin of sesquicentennial

An Americanism dating back to 1875–80; sesqui- + centennial

OTHER WORDS FROM sesquicentennial

ses·qui·cen·ten·ni·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use sesquicentennial in a sentence

British Dictionary definitions for sesquicentennial

sesquicentennial
/ (ˌsɛskwɪsɛnˈtɛnɪəl) /

adjective
of or relating to a period of 150 years
noun
a period or cycle of 150 years
a 150th anniversary or its celebration

Derived forms of sesquicentennial

sesquicentennially, adverb
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
FEEDBACK