Sesqui-

Webster's Dictionary of the English Language

·- A combining form (also used adjectively) denoting that three atoms or equivalents of the substance to the name of which it is prefixed are combined with two of some other element or radical; as, sesquibromide, sesquicarbonate, sesquichloride, sesquioxide.

Related Words

sesqui
sesquĭ (sesque), num. adv. [perh. contr. from semis-qui], one half more , more by a half. As a s...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
sesqui
sēsqui adv. num. cf. semis, one half, by a half : pars aequalis alteri aut sesqui ...

An Elementary Latin Dictionary