<botany> Of or pertaining to the fir tree or its products; as, abietic acid, ... Synonym: sylvic acid. ... (11 Mar 1998) ... Found on http://www.encyclo.co.uk/local/20973
Ab`i·et'ic adjective Of or pertaining to the fir tree or its products; as, abietic acid, called also sylvic acid. Watts. Found on http://www.encyclo.co.uk/webster/A/4