cardioid Hear it!

cardioid definition

car·di·oid (kär′dē o̵id′)

noun

Math. a curve more or less in the shape of a heart, traced by a point on the circumference of a circle that rolls around the circumference of another equal circle

Etymology: Gr kardioeidēs, heart-shaped < kardia, heart + -oeidēs, -oid

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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