The Collaborative International Dictionary of English v.0.48:
Antennal \An*ten"nal\, a. (Zool.) Belonging to the antenn[ae]. --Owen. [1913 Webster]WordNet (r) 3.0 (2006):
antennal adj 1: of or relating to antennae; "antennal senses of insects" [syn: antennal, antennary]