sesqui-


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

Origin of sesqui-

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

British Dictionary definitions for sesqui-

sesqui-

prefix

indicating one and a half sesquicentennial
(in a chemical compound) indicating a ratio of two to three sesquioxide

Word Origin for sesqui-

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