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oc·ta·dec·a·di·e·no·ic acid | \ ˌäk-tə-ˌdek-ə-ˌdī-ə-ˌnō-ik- 
\
\Medical Definition of octadecadienoic acid
: any of several unsaturated fatty acids C18H32O2 some of which (as linoleic acid) occur in fats and oils
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