retene
noun
\ ˈrēˌtēn, ˈreˌ-\
plural -s
Definition of retene
: a crystalline hydrocarbon C18H18 isolated especially from pine tar, rosin oil, and various fossil resins but usually prepared from abietic acid and related compounds by dehydrogenation; 1-methyl-7-isopropyl-phenanthrene
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