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The Collaborative International Dictionary of English v.0.48 (gcide)

Semicircular \Sem`i*cir"cu*lar\, a.
Having the form of half of a circle. --Addison.
[1913 Webster]

{Semicircular canals} (Anat.), certain canals of the inner
ear. See under {Ear}.
[1913 Webster]


curved \curved\ adj.
1. not straight; having or marked by curves. Opposite of
{straight}.

Note: [Narrower terms: {arced, arched, arching, arciform,
arcuate, bowed}; {falcate, sickle-shaped}; {flexuous};
{incurvate, incurved}: {recurved, recurvate};
{semicircular}: {serpentine, snaky}: {sinuate, sinuous,
wavy}: {sinusoidal}]

Syn: curving.
[WordNet 1.5]

2. (Botany) curved with the micropyle near the base almost
touching its stalk; -- of a plant ovule. Opposite of
{orthotropous}.

Syn: campylotropous.
[WordNet 1.5]