Dictionary.com
Thesaurus.com
Showing results for semilunar. Search instead for Semi lunar.

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

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 two semilunar valves, the pulmonary and aortic valves, are closed, preventing backflow of blood into the right and left ventricles from the pulmonary trunk on the right and the aorta on the left.

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

The tricuspid valves and the semilunar valves of the pulmonary artery had lost their healthy transparency, but were not otherwise diseased.

From Cases of Organic Diseases of the Heart by Warren, John Collins