Source : Webster's Revised Unabridged Dictionary (1913)

Arcuate \Arc"u*ate\, Arcuated \Arc"u*a`ted\(#), a. [L. arcuatus,
   p. p. of arcuare to shape like a bow, fr. arcus. See {Arc}.]
   Bent or curved in the form of a bow. ``Arcuate stalks.''
   --Gray.

Source : WordNet®

arcuate
     adj : forming or resembling an arch; "an arched ceiling" [syn: {arced},
            {arched}, {arching}, {arciform}, {bowed}]