ARCUATE
arced, arched, arching, arciform, arcuate, bowed
(adjective) forming or resembling an arch; “an arched ceiling”
Source: WordNet® 3.1
Etymology
Adjective
arcuate (comparative more arcuate, superlative most arcuate)
curved into the shape of a bow
Source: Wiktionary
Arc"u*ate, Arc"u*a`ted(#), a. Etym: [L. arcuatus, p. p. of arcuare to
shape like a bow, fr. arcus. See Arc.]
Definition: Bent or curved in the form of a bow. "Arcuate stalks." Gray.
Source: Webster’s Unabridged Dictionary 1913 Edition