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stearic acid Definition
stearic acidnoun 1. chem.(formula CH3(CH2)16COOH) a colourless fatty acid with a slight taste and odour that is commonly found in animal fats, as well as in some plants, and which is used as a lubricant and in the manufacture of pharmaceutical products, cosmetics, candles, soap, etc. Also called octadecanoic acid.
Etymology: 19c.