HyperDic: sesquicentennial

English > 1 sense of the word *sesquicentennial*:
NOUN	time	sesquicentennial	the 150th anniversary (or the celebration of it)

English > *sesquicentennial*: 1 sense > noun 1, time
Meaning	The 150th anniversary (or the celebration of it).
Broader	anniversary, day of remembrance	The date on which an event occurred in some previous year (or the celebration of it)