Dictionary

1cycloid

noun cy·cloid \ˈsī-ˌklid\

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-ˈkli-dəl\ adjective

Illustration of CYCLOID

Origin of CYCLOID

French cycloïde, from Greek kykloeidēs circular, from kyklos
First Known Use: 1661

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

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