semilunar
Curved like crescents
Semilunar means shaped like a half-moon or crescent.
The term appears primarily in anatomy: the semilunar valves control blood flow from the heart's ventricles, and semilunar cartilages cushion the knee joint.
The semilunar notch of the ulna articulates with the humerus.
Curved sickle-like arc
- curvedSmoothly bent, not angular
- archedCurved overhead
- half-moonPartially lit lunar phase
- arcCurved line segment
bow · concave · convex · cartilage · bone · notch · ganglion · knee
Fluid flow controller
- heartCirculatory system's pump
- aorticOf the main artery
- pulmonaryOf the lungs
- cuspsSharp projecting points
ventricle · cardiology · circulation · blood · flow · coronary · endocardium · bicuspid
crescent
Curved sickle-like arc
arc · bow · concave · convex · cartilage · bone · notch · ganglion · knee
valve
Fluid flow controller
cusps · ventricle · cardiology · circulation · blood · flow · coronary · endocardium · bicuspid · tricuspid
moon
Natural planetary satellite
gibbous · new · quarter · eclipse · celestial · orbit · tides · luminous · synodic · sidereal