Wordnet 3.0
ADJECTIVE (1)
1. 
 of or relating to taxonomy; 
- Example: "taxonomic relations"- Example: "a taxonomic designation"[syn: taxonomic, taxonomical, systematic]
WordNet (r) 3.0 (2006):
taxonomical
    adj 1: of or relating to taxonomy; "taxonomic relations"; "a
           taxonomic designation" [syn: taxonomic, taxonomical,
           systematic]