Synonyms of the word 
SEMICIRCULAR → CURVED - CURVING
semicircular
- adj. In the shape of half of a circle or a semicircle.
curved
- adj. Having a curve or curves.
- v. simple past tense and past participle of curve.
curving
- v. present participle of curve.
- n. A shape or motion that curves.
- adj. That curves or curve.
If you are interested in words, visit the following sites :
- wiktionary.org/semicircular For complete definition of a word
- 1word.ws/semicircular to play with words, suffixs, prefixs, etc.