cardioid

car·di·oid

C c

Transcription

- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
- [kahr-dee-oid]
- /ˈkɑr diˌɔɪd/
- /kˈɑːdɪˌəʊɪd/

- US Pronunciation
- US IPA
- [kahr-dee-oid]
- /ˈkɑr diˌɔɪd/

Definitions of cardioid word

noun cardioid 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 3
noun cardioid 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 3
noun cardioid a somewhat heart-shaped curve, being the path of a point on a circle that rolls externally, without slipping, on another equal circle. Equation: r = a (1−cosA). 1
noun cardioid A heart-shaped curve traced by a point on the circumference of a circle as it rolls around another identical circle. 1
noun cardioid (geometry) An epicycloid with exactly one cusp; the plane curve with polar equation - having a shape supposedly heart-shaped. 0
adjective cardioid Having this characteristic shape. 0

See all 6 definitions of cardioid

Information block about the term

Origin of cardioid

First appearance:

before 1745

One of the 47% newest English words

First recorded in 1745-55, cardioid is from the Greek word kardioeidḗs heart-shaped. See cardi-, -oid

Historical Comparancy

Parts of speech for Cardioid

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Cardioid

cardioid popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 63% of English native speakers know the meaning and use word.

This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.

cardioid usage trend in Literature

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