sesqui-

1. a combining form meaning “one and a half,” used in the formation of compound words:

   sesquicentennial.

sesqui-

prefix

1. indicating one and a half

   sesquicentennial

2. (in a chemical compound) indicating a ratio of two to three

   sesquioxide

Word History and Origins

Origin of sesqui-¹

< Latin sēsqui- < *sēm ( i ) sque, equivalent to sēmis half-unit, semis + -que and (cognate with Greek té, Sanskrit ca, Gothic -uh )

Word History and Origins

Origin of sesqui-¹

from Latin, contraction of semi- + as as ² + -que and

Example Sentences

In 1961, a group of Black protesters, most of them local college students, attempted to the enter Sesqui, which was open to White visitors only.

From Washington Times

He has memories from growing up of visiting the park with family, but he never knew “Sesqui” had a campground.

From Washington Times

On a cool November morning - prime hiking weather - Hunter walked the trails of Sesqui with state parks Director Paul McCormack, discussing what’s become their shared mission: making state park campgrounds look more like the communities they serve.

From Washington Times

Its name: the Sesquicentennial Amphitheater, “Sesqui” for short.

From Washington Post

Sesqui-, Latin for one and a half; so Sesquipedalis, a foot and a half long.

From Project Gutenberg