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Definition of "tricuspid" [tri•cus•pid]

  • An organ or part, especially a tooth, having three cusps. (noun)
  • Having three cusps, especially a molar tooth. (adjective)
  • Of or relating to the tricuspid valve. (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.

Use "tricuspid" in a sentence
  • "The pulsation may be described as tricuspid; that is, it consists of a strong beat, preceded and followed by lesser beats."
  • "The valve on the right side is called the tricuspid, because it consists of three little folds which fall over the opening and close it, being kept from falling too far by a number of slender threads called chordæ tendinæ."
  • "The valve which guards the entrance into the right ventricle is called tricuspid, and consists of three flaps attached by delicate tendinous cords in such a way as to hinder the tending backwards of the flaps into the right auricle, and so allowing the blood to flow back into that chamber."
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