The Collaborative International Dictionary
Abietic
Abietic \Ab`i*et"ic\, a.
Of or pertaining to the fir tree or its products; as, abietic
acid, called also sylvic acid.
--Watts.
Wiktionary
abietic
a. 1 Of, pertaining to, or derived from fir trees. 2 (context organic chemistry English) Of or pertaining to abietic acid or its derivatives.