Definition of "bicuspid" [bi•cus•pid]

• Having two points or cusps, as the crescent moon. (adjective)
• A bicuspid tooth, especially a premolar. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Mine was caused by a congenital defect I was born with called a bicuspid aortic valve."
• "The auriculo-ventricular valve in the left side is composed of two flaps, hence it is called the bicuspid valve; in the right side this valve has three flaps and is called the tricuspid valve."
• "Boone will have the operation - technically called bicuspid aortic valve aneurysm surgery - at Stanford University Hospital in California, and he plans to schedule it in the coming days."