— semicircular /sem'i serr"kyeuh leuhr/ , adj. — semicircularly , adv. — semicircularness , n.
/sem"i serr'keuhl/ , n.
1. Also called semicircumference /sem'ee seuhr kum"feuhr euhns, -freuhns, sem'uy-/ . half of a circle; the arc from one end of a diameter to the other.
2. anything having or arranged in the form of a half of a circle.
[ 1520-30; semicirculus. See SEMI-, CIRCLE ]