Cycloid — Cy cloid, a. (Zo[ o]l.) Of or pertaining to the Cycloidei. [1913 Webster] {Cycloid scale} (Zo[ o]l.), a fish scale which is thin and shows concentric lines of growth, without serrations on the margin. [1913 Webster] … The Collaborative International Dictionary of English
Cycloid — Cy cloid, n. (Zo[ o]l.) One of the Cycloidei. [1913 Webster] … The Collaborative International Dictionary of English
cycloid — [sī′kloid΄] n. [Gr kykloeidēs, circular < kyklos (see WHEEL) + eidēs, OID] Geom. a curve traced by any point on a radius, or an extension of the radius, of a circle which rolls without slipping through one complete revolution along a straight… … English World dictionary
Cycloid — For other uses, see Cycloid (disambiguation). A cycloid generated by a rolling circle A cycloid is the curve traced by a point on the rim of a circular wheel as the wheel rolls along a straight line. It is an example of a roulette, a curve… … Wikipedia
cycloid — cycloidal, adj. cycloidally, adv. /suy kloyd/, adj. 1. resembling a circle; circular. 2. (of the scale of a fish) smooth edged, more or less circular in form, and having concentric striations. 3. (of a fish) having such scales. 4. Psychiatry. of… … Universalium
cycloid — Suggesting cyclothymia; a term applied to a person who tends to have periods of marked swings of mood, but within normal limits. [cyclo + G. eidos, resembling] * * * cy·cloid sī .klȯid n a cycloid individual cycloid adj relating to, having, or… … Medical dictionary
cycloid — I. noun Etymology: French cycloïde, from Greek kykloeidēs circular, from kyklos Date: 1661 a curve that is generated by a point on the circumference of a circle as it rolls along a straight line • cycloidal adjective II. adjective Date: 1847 1.… … New Collegiate Dictionary
cycloid — Brachystochrone Bra*chys to*chrone, n. [Incorrect for brachistochrone, fr. Gr. bra chistos shortest (superl. of brachy s short) + ? time : cf. F. brachistochrone. ] (Math.) A curve, in which a body, starting from a given point, and descending… … The Collaborative International Dictionary of English
cycloid — 1. noun a) The locus of a point on the circumference of a circle that rolls without slipping on a fixed straight line. b) A fish having cycloid scales … Wiktionary
cycloid — /ˈsaɪklɔɪd/ (say suykloyd) adjective 1. resembling a circle; circular. 2. (of fishes scales) smooth edged, more or less circular in form, with concentric striations. 3. having such scales, as a fish. 4. Psychology (of a personality type)… …
