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)

Words Nearby sesqui-

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use sesqui- in a sentence

At length it was discovered that sesqui-sulphide of phosphorus would make just as good matches and was harmless.
Makers of Many Things | Eva March Tappan
We may, for example, differentiate in this way the alkaline bicarbonates from the sesqui-carbonates or the carbonates.
The Mechanism of Life | Stphane Leduc
Float the paper on a solution of the sesqui-chloride of iron.
Photography in the Studio and in the Field | Edward M. Estabrooke
Sesqui-, Latin for one and a half; so Sesquipedalis, a foot and a half long.
The Elements of Botany | Asa Gray

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

Origin of sesqui-

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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