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| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| the offspring of a zebra and a donkey. |
fatty acid n.
Any of a large group of long-chain monobasic organic acids hydrolytically derived from fats.
| fatty acid (fāt'ē) Pronunciation Key
Any of a large group of organic acids, especially those found in animal and vegetable fats and oils. Fatty acids are mainly composed of long chains of hydrocarbons ending in a carboxyl group. A fatty acid is saturated when the bonds between carbon atoms are all single bonds. It is unsaturated when any of these bonds is a double bond. |