Definition of abietic acid
: a colorless crystalline tricyclic acid C19H29COOH with two double bonds that constitutes the major component of rosin, that is formed from certain other resin acids by heat and acid treatment, and that is used chiefly in making esters for plasticizers
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Origin and Etymology of abietic acid
borrowed from French (acide) abiétique, from abiet- (borrowed from Latin abiet-, abiēs “silver fir”) + -ique 1-ic
First Known Use: 1826
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