anhydride

[ an-hahy-drahyd, -drid ]

/ ænˈhaɪ draɪd, -drɪd /

noun Chemistry.

a compound formed by removing water from a more complex compound: an oxide of a nonmetal (acid anhydride) or a metal (basic anhydride) that forms an acid or a base, respectively, when united with water.

a compound from which water has been abstracted.

Nearby words

anhui, anhyd., anhydr-, anhydrase, anhydremia, anhydride, anhydrite, anhydro-, anhydrous, ani, aniakchak

Origin of anhydride

1860–65; anhydr(ous) + -ide

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for anhydride

Like sulphur, selenium combines with oxygen and forms an anhydride corresponding to sulphurous anhydride.
Cooley's Practical Receipts, Volume II|Arnold Cooley
As Arsenious anhydride:—Obtained in a weighed capsule or tube, either by the crystallisation or sublimation test.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
The constituents of rosin are chiefly (80-90%) abietic acid or its anhydride together with pinic and sylvic acids.
Soap-Making Manual|E. G. Thomssen
Nitric peroxide, Peroxide of nitrogen, Nitrogen tetroxide, Hyponitric anhydride.
Cooley's Practical Receipts, Volume II|Arnold Cooley

As a matter of fact, reaction takes place at the boiling temperature of the anhydride.
Researches on Cellulose|C. F. Cross

British Dictionary definitions for anhydride

anhydride

/ (ænˈhaɪdraɪd, -drɪd) /

noun

a compound that has been formed from another compound by dehydration

a compound that forms an acid or base when added to water

Also called: acid anhydride, acyl anhydride any organic compound containing the group -CO.O.CO- formed by removal of one water molecule from two carboxyl groups

Word Origin for anhydride

C19: from anhydr (ous) + -ide

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

Medicine definitions for anhydride

anhydride

[ ăn-hī′drīd′ ]

n.

A chemical compound formed from another by the removal of water.

Science definitions for anhydride

anhydride

[ ăn-hī′drīd′ ]

A chemical compound formed from another, especially an acid, by the removal of water.