Definition of "cuspidate" [cus•pi•date]

• Having a cusp. (adjective)
• Biology Terminating in or tipped with a sharp firm point: a cuspidate leaf apex. (adjective)

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.

• "Resveratrol comes from grapes (hence the benefit of red wine), peanuts, berries, and a Chinese herb called hu zhang (polygonum cuspidate, also known as giant knotweed, which is a common ingredient in many Chinese herbal formulas)."
• "If the mitral cuspidate valves do not prevent the egress of fuliginous vapours to the lungs, how should they oppose the escape of air?"
• "The _fourth glume_ is smooth, shining, broadly oblong, faintly 5-nerved, apex rounded or cuspidate with a few cilia; paleate with a single bisexual flower; _palea_ is similar to the glume in structure."