Definition of 'cardioid'

Word Frequency

cardioid in British

(ˈkɑːdɪˌɔɪd )

noun

a heart-shaped curve generated by a fixed point on a circle as it rolls around another fixed circle of equal radius, a. Equation: r = a(1 – cos φ), where r is the radius vector and φ is the polar angle

Word Frequency

cardioid in American

(ˈkɑrdiˌɔɪd ; kärˈdēoidˌ)

noun

Ancient Mathematics

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

Word origin of 'cardioid'

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

Trends of 'cardioid'

Used Rarely. cardioid is in the lower 50% of commonly used words in the Collins dictionary

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Nearby words of 'cardioid'

Source

Definition of cardioid from the Collins English Dictionary

Tense

Time reference Verb forms help us make time reference through their tense. Tense shows whether an action or a state took place in the past or takes place in the present. Jessica works in the pos...