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“sesquicentennial”
sesquicentennial (adjective) (not comparable)
Referring to a period of 150 years or pertaining to something that occurs every 150 years; relating to or happening after a period of 150 years.
This entry is located in the following units:
centi-, cent-
(page 3)
-enni-, -ennial, -ennium
(page 4)
sesqui-
(page 1)