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The Collaborative International Dictionary
Anhydride

Anhydride \An*hy"dride\, n. [See Anhydrous.] (Chem.) An oxide of a nonmetallic body or an organic radical, capable of forming an acid by uniting with the elements of water; -- so called because it may be formed from an acid by the abstraction of water.

Wiktionary
anhydride

n. (context chemistry English) any compound formally derived from another (or from others) by the loss of a water molecule, especially acid anhydrides

WordNet
anhydride

n. a compound formed from one or more other compounds in a reaction resulting in removal of water

Wikipedia

Usage examples of "anhydride".

Because of the acidic components present in the reaction mixture of the mixed anhydride, about five mols or equivalents of the ammo compound are required per mole or equivalent of mixed anhydride for maximal conversion of the mixed anhydride to the amide.

When an alkanolamine such as ethanolamine or aminopropanol is reacted with the mixed anhydride of lysergic and trifluoroacetic acids, the reaction product contains not only the desired hydroxy amide but also, to a minor extent, some ammo ester.

To the suspension is then added slowly a solution of about two equivalents of trifluoroacetic anhydride dissolved in acetonitrile and previously cooled to about -20 degrees C.

The acetonitrile solution containing mixed anhydride is added to 150 ml.

He walked, using his eyes as well as his ears, since the region was brightened by snow—frozen carbon dioxide, of course, and the anhydrides of other solidified gases.

The colouring principles are acids or acid anhydrides, themselvescolourless but yielding colour when acted upon by ammonia, air and moisture.

The chief constituents are about 5 per cent of Filmaron - an amorphous acid, and from 5 to 8 per cent of Filicic acid, which is also amorphous and tends to degenerate into its inactive crystalline anhydride, Filicin.