sem·i·cir·cle 
(sĕmĭ-sûr′kəl)
(sĕmĭ-sûr′kəl)n.
1. A half of a circle as divided by a diameter.
2. An object or arrangement of objects or people in the shape of half a circle.
sem′i·circu·lar (-kyə-lər) adj.
- trichinize
- trichinosis
- trichinous
- trichite
- trichitic
- trichlorid
- trichloride
- trichloroacetic acid
- trichloroethane
- trichloroethene
- trichloroethylene
- tricho-
- trichocyst
- trichocystic
- trichogyne
- trichoid
- trichome
- trichomonad
- trichomonadal
- trichomonal
- trichomoniasis
- trichopteran
- trichosis
- trichotillomania
- trichotomous