astroid

[ as-troid ]
/ ˈæs trɔɪd /

noun Geometry.

a hypocycloid with four cusps.

Origin of astroid

British Dictionary definitions for astroid

astroid
/ (ˈæstrɔɪd) /

noun

maths a hypocycloid having four cusps

Word Origin for astroid

C19: from astro- + -oid