cycloid

¹cy·cloid

noun \ˈsī-ˌklȯid\

Definition of CYCLOID

: a curve that is generated by a point on the circumference of a circle as it rolls along a straight line

— cy·cloi·dal \sī-ˈklȯi-d^əl\ adjective

Illustration of CYCLOID

Origin of CYCLOID

French cycloïde, from Greek kykloeidēs circular, from kyklos

First Known Use: 1661

Rhymes with CYCLOID

android, avoid, chancroid, colloid, conoid, crinoid, cuboid, deltoid, dendroid, devoid, discoid, factoid, fibroid, fungoid, ganoid, globoid, hydroid, hypnoid, keloid, mastoid, mucoid, ovoid, prismoid, pygmoid, rhizoid, rhomboid, schizoid, scombroid, sigmoid, spheroid, steroid, styloid, tabloid, thalloid, thyroid, toroid, toxoid, trochoid, typhoid, Veddoid, viroid

²cycloid

adjective

Definition of CYCLOID

1

: smooth with concentric lines of growth <cycloid scales>; also : having or consisting of cycloid scales

2

: characterized by alternating high and low moods <a cycloid personality>

First Known Use of CYCLOID

1847