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| existing as free, uncombined atoms |
| a substance that causes a chemical reaction without itself being affected |
anhydride an·hy·dride (ān-hī'drīd')
n.
A chemical compound formed from another by the removal of water.
| anhydride (ān-hī'drīd') Pronunciation Key
A chemical compound formed from another, especially an acid, by the removal of water. |