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semilunar

American  
[sem-ee-loo-ner, sem-ahy-] / ˌsɛm iˈlu nər, ˌsɛm aɪ- /

adjective

  1. shaped like a half-moon; crescent.


semilunar British  
/ ˌsɛmɪˈluːnə /

adjective

  1. shaped like a crescent or half-moon

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of semilunar

First recorded in 1590–1600; semi- + lunar

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Closing of the semilunar valves produces a monosyllabic “dup” sound.

From Textbooks • Jun. 9, 2022

The semilunar valves form between weeks five and nine.

From Textbooks • Jun. 19, 2013

There are three dilations in the wall of the aorta just superior to the aortic semilunar valve.

From Textbooks • Jun. 19, 2013

The valves at the openings that lead to the pulmonary trunk and aorta are known generically as semilunar valves.

From Textbooks • Jun. 19, 2013

In cases where much injury has been done to the floor of the axilla and wall of chest, the deltoid flap must be made large in proportion, and triangular rather than semilunar in shape.

From A Manual of the Operations of Surgery For the Use of Senior Students, House Surgeons, and Junior Practitioners by Bell, Joseph

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