The Collaborative International Dictionary of English v.0.48:
Bicameral \Bi*cam"er*al\, a. [Pref. bi- + camera.] Consisting of, or including, two chambers, or legislative branches. --Bentham. [1913 Webster]WordNet (r) 3.0 (2006):
bicameral adj 1: composed of two legislative bodies [ant: unicameral] 2: consisting of two chambers; "the bicameral heart of a fish" [syn: bicameral, two-chambered]