CARDIOID


Meaning of CARDIOID in English

I. ˈkärdēˌȯid noun

( -s )

Etymology: cardi- + -oid

: a heart-shaped closed curve traced by a point on the circumference of a circle as it rolls completely around an equal fixed circle and forms an epicycloid of one cusp and one loop, the polar equation with cusp as pole being r=a (1 - cos θ ), where a is the diameter of either circle

[s]cardioid.jpg[/s] [

cardioid: ABP fixed circle; PCD first position of rolling circle; P tracing point; PM diameter through P; P 1 , P 2 , P 3 , P 4 various positions of P; P 1 M 1 , P 2 M 2 , P 3 M 3 , P 4 M 4 various positions of PM

]

II. adjective

: connected with or relating to a cardioid

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.