semilunar

Shaped like a half-moon; crescent-shaped.

Shaped like a half-moon; crescent-shaped; lunar.

Shaped like a half-moon or crescent.

• s. valve — valve guarding the entrances into the aorta and pulmonary trunk from the cardiac ventricles.
• s. valve anomaly — abnormal development causes an irregular central perforation of the valve and the signs of valvular stenosis.

The adjective has one meaning:

Meaning #1: resembling the new moon in shape
  Synonyms: bicephalous, crescent, crescent-shaped, lunate

Semilunar can refer to:

• Semilunar valves
• An older name for the Lunate bone

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