The Collaborative International Dictionary
pelicoid
Pelecoid \Pel"e*coid\, n. [Gr. ? a hatchet + -oid.] (Geom.)
A figure, somewhat hatched-shaped, bounded by a semicircle
and two inverted quadrants, and equal in area to the square
ABCD inclosed by the chords of the four quadrants. [Written
also pelicoid.]
--Math. Dict.