cycloidal

cycloidtop: surface view of cycloid scales of a bony fishbottom: The parametric equations of this cycloid arex = r(θ - sin θ),y = r(1 - cos θ).cycloid

cy·cloid

C0835500 (sī′kloid′)adj.1. Resembling a circle.2. Zoology a. Relating to or being a kind of fish scale that is thin, rounded, and smooth-edged and often shows concentric growth rings.b. Having cycloid scales.3. Psychology Afflicted with or relating to cyclothymia.n. Mathematics The curve traced by a point on the circumference of a circle that rolls on a straight line.

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[French cycloïde, from Greek kukloeidēs, circular : kuklos, circle; see k^wel- in Indo-European roots + -oeidēs, -oid.]

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cy·cloi′dal (-kloid′l) adj.

Thesaurus

Adj.

1.

cycloidal - resembling a circlecycloidrounded - curving and somewhat round in shape rather than jagged; "low rounded hills"; "rounded shoulders"