sesqui-

combining form

1

: one and a half times

sesquicentennial

2

: containing half again as many atoms

sesquiterpene

3

: intermediate : combination

sesquicarbonate

Word History

Etymology

Latin, one and a half, half again, literally, and a half, from semis half of an as, one half (probably from semi- + as as) + -que (enclitic) and; akin to Greek te and, Sanskrit ca, Goth -h, -uh

Kids Definition

sesqui-

combining form

: one and a half times

sesquicentennial

Etymology

from Latin sesqui- "one and a half," literally, "and a half," derived from semi- "half"