1. The quality (influenced by odor) affecting the taste of any substance. 2. A therapeutically inert substance added to a prescription to give an agreeable taste to the mixture. [M.E., fr. O. Fr., fr. L.L. flator, aroma, fr. flo, to blow]

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fla·vor or chiefly Brit fla·vour 'flā-vər n
1 a) the quality of something that affects the sense of taste <condiments give \flavor to food>
b) the blend of taste and smell sensations evoked by a substance in the mouth <the \flavor of ripe fruit>
2) a substance that flavors
fla·vored or chiefly Brit fla·voured -vərd adj
flavor or chiefly Brit fla·vour vt, fla·vored or chiefly Brit fla·voured; fla·vor·ing or chiefly Brit fla·vour·ing 'flāv-(ə-)riŋ to give or add flavor to

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fla·vor (flaґvər) 1. that quality of any substance which affects the taste. 2. a pharmaceutical or other preparation for improving the taste of a food or medicine.

Medical dictionary. 2011.