semiround

sem·i·round

 (sĕm′ē-round′, sĕm′ī-)
adj.
Having a round side and a flat side.

semiround

(ˌsɛmɪˈraʊnd)
n
(Mathematics) a semiround object or shape
adj
(Mathematics) with one flat side and one round side; having the shape of half a circle; semicircular
References in periodicals archive ?
26 to, Dump Truck semiround equipped with winter plug ( blade ) and snow shoe towing a trailer load of minimum 40
The 2-ounce size is semiround and flat so it slides smoothly across the bottom, but puffs up enough sand to grab attention.
Grit particles are angular because they are produced by crushing round and semiround particles.