anhydride

American  

[an-hahy-drahyd, -drid] / ænˈhaɪ draɪd, -drɪd /

noun

Chemistry.

1. 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.

2. a compound from which water has been abstracted.

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anhydride British  

/ ænˈhaɪdraɪd, -drɪd /

noun

1. a compound that has been formed from another compound by dehydration

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

3. 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

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anhydride Scientific  

/ ăn-hī′drīd′ /

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

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Etymology

Origin of anhydride

1860–65; anhydr(ous) + -ide ( def. )

Example Sentences

These previously uncharacterized acid sulfuric anhydride products are almost certainly key contributors to atmospheric new particle formation and a way to efficiently incorporate carboxylic acids into atmospheric nanoparticles.

From Science Daily • May 23, 2024

The decomposition time could be varied from days to weeks and potentially even longer by altering the polymer’s anhydride content and the humidity.

From Scientific American • Sep. 8, 2017

Gradually, water vapour from the air hydrolysed the polymer’s anhydride groups, causing decomposition of the film.

From Scientific American • Sep. 8, 2017

A vacuum is created and then flooded with a liquid called acetic anhydride - effectively industrial vinegar - which is sucked into the spaces in the wood.

From BBC • May 6, 2011

Then add anhydrous sodium acetate and acetic anhydride in the usual amounts and proceed as described in the regular analysis.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by Thomssen, E. G.