astroid

1 of 2

adjective

as·​troid

ˈaˌstrȯid

: shaped like a star

astroid

2 of 2

noun

"

plural -s

: a hypocycloid of four cusps, the radius of the rolling circle being one fourth that of the fixed circle

Word History

Etymology

Adjective

Greek astroeidēs starlike, from astr- + -oeidēs -oid

Noun

astr- + -oid

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