Search Result for "synapsid": 
Wordnet 3.0

NOUN (1)

1. extinct reptile having a single pair of lateral temporal openings in the skull;
[syn: synapsid, synapsid reptile]


WordNet (r) 3.0 (2006):

synapsid n 1: extinct reptile having a single pair of lateral temporal openings in the skull [syn: synapsid, synapsid reptile]