The Collaborative International Dictionary of English v.0.48:

gynaecological \gynaecological\ gynecological
\gynecological\adj.
   Of or pertaining to gynecology; same as gynecological.

   Syn: gynecologic.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Gynecological \Gyn`e*co*log"ic*al\
   (j[i^]n`[-e]*k[-o]*l[o^]j"[i^]*kal or g[imac]`n[-e]-), a.
   Of or pertaining to gynecology.
   [1913 Webster]

WordNet (r) 3.0 (2006):

gynecological
    adj 1: of or relating to or practicing gynecology;
           "gynecological examination" [syn: gynecological,
           gynaecological, gynecologic]