arciform (a.)拱狀的,弓形的
ar·ci·form /ˈɑrsəˌfɔrm/ 形容詞 弓形
Ar·ci·form a. Having the form of an arch; curved. ◄ ►
arciform adj : forming or resembling an arch; "an arched ceiling" [syn: arced, arched, arching, arcuate, bowed]