CARDIOID

cardioid

(noun) an epicycloid in which the rolling circle equals the fixed circle

Source: WordNet® 3.1

Etymology

Noun

cardioid (plural cardioids)

(geometry) An epicycloid with exactly one cusp; the plane curve with polar equation $\backslash (\backslash rho\; =\; 1\; +\; \backslash cos\backslash ,\backslash theta\backslash )$ - approximately heart-shaped

Adjective

cardioid (comparative more cardioid, superlative most cardioid)

Having this characteristic shape

(of a microphone) sensitive in front, but not behind or at the sides

Anagrams

• caridoid, cidaroid

Source: Wiktionary

Car"di*oid, n. Etym: [Gr. ( (Math.)

Definition: An algebraic curve, so called from its resemblance to a heart.

Source: Webster’s Unabridged Dictionary 1913 Edition

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