Part 737

Cy"cling (s?"kl?ng), n. The act, art, or practice, of riding a cycle, esp. a bicycle or tricycle.

Cy"clist (s?"kl?st), n. A cycler.

Cy"clo- (s?"kl?-). [Gr. ky`klos circle, wheel.] A combining form meaning circular, of a circle or wheel.

Cy`clo*bran"chi*ate (s?`kl?-br?n"k?-?t), a. [Cyclo- + branchiate.] (Zo÷l) Having the gills around the margin of the body, as certain limpets.

Cy`clo*ga"noid (s?`kl?-g?"noid or -g?n"oid), a. (Zo÷l.) Of or pertaining to the Cycloganoidei.

Cy`clo*ga"noid, n. (Zo÷l.) One of the Cycloganoidei.

||Cy`clo*ga*noi"de*i (s?"kl?-g?-noi"d?-?), n. pl. [NL., fr. Gr. ky`klos circle + NL. ganoidei. See Ganoid.] (Zo÷l.) An order of ganoid fishes, having cycloid scales. The bowfin (Amia calva) is a living example.

Cy"clo*graph (s?"kl?-gr?f), n. [Cyclo- + -graph.] See Arcograph.

Cy"cloid (s?"kloid), n. [Cyclo- + -oid: cf. F. cyclo´de.] (Geom.) A curve generated by a point in the plane of a circle when the circle is rolled along a straight line, keeping always in the same plane.

&fist; The common cycloid is the curve described when the generating point (p) is on the circumference of the generating circle; the curtate cycloid, when that point lies without the circumference; the prolate or inflected cycloid, when the generating point (p) lies within that circumference.

Cy"cloid, a. (Zo÷l.) Of or pertaining to the Cycloidei.

Cycloid scale (Zo÷l.), a fish scale which is thin and shows concentric lines of growth, without serrations on the margin.

Cy"cloid, n. (Zo÷l.) One of the Cycloidei.

Cy*cloid"al (-al), a. Pertaining to, or resembling, a cycloid; as, the cycloidal space is the space contained between a cycloid and its base.

Cycloidal engine. See Geometric lathe.

||Cy*cloi"de*i (s?-kloi"d?-?), n. pl. [NL., fr. Gr. ky`klos circle + - oid.] (Zo÷l.) An order of fishes, formerly proposed by Agassiz, for those with thin, smooth scales, destitute of marginal spines, as the herring and salmon. The group is now regarded as artificial.

Cy*cloid"i*an (s?-kloid"?-an), a. & n. (Zo÷l.) Same as 2d and 3d Cycloid.

Cy*clom"e*ter (s?-kl?m"?-t?r), n. [Cyclo- + -meter.] A contrivance for recording the revolutions of a wheel, as of a bicycle.

Cy*clom"e*try (-tr?), n. [Cyclo- + -metry: cf. F. cyclomÚtrie.] (Geom.) The art of measuring circles.

Cy"clone (s?"kl?n), n. [Gr.&?;&?;&?;&?;&?; moving in a circle, p. pr. of &?;&?;&?;&?;&?;, fr. ky`klos circle.] (Meteor.) A violent storm, often of vast extent, characterized by high winds rotating about a calm center of low atmospheric pressure. This center moves onward, often with a velocity of twenty or thirty miles an hour.

&fist; The atmospheric disturbance usually accompanying a cyclone, marked by an onward moving area of high pressure, is called an anticyclone.

Cy*clon"ic (s?-kl?n"?k), a. Pertaining to a cyclone.

Cy"clop (s?"kl?p), n. See Note under Cyclops, 1.

Cy`clo*pe"an (s?`kl?-p?"an), a. [L. Cyclopeus, Gr. &?;&?;&?;&?;&?;, fr. &?;&?;&?;&?;&?; Cyclops: cf. F. cyclopeen.] Pertaining to the Cyclops; characteristic of the Cyclops; huge; gigantic; vast and rough; massive; as, Cyclopean labors; Cyclopean architecture.

{ Cy`clo*pe"di*a Cy`clo*pŠ"di*a } (s?`kl?-p?"d?-?), n. [NL., from Gr. ky`klos circle + paidei`a the bringing up of a child, education, erudition, fr. paidey`ein to bring up a child. See Cycle, and cf. Encyclopedia, Pedagogue.] The circle or compass of the arts and sciences (originally, of the seven so-called liberal arts and sciences); circle of human knowledge. Hence, a work containing, in alphabetical order, information in all departments of knowledge, or on a particular department or branch; as, a cyclopedia of the physical sciences, or of mechanics. See Encyclopedia.

Cy`clo*ped"ic (s?`kl?-p?d"?k or -p?"d?k), a. Belonging to the circle of the sciences, or to a cyclopedia; of the nature of a cyclopedia; hence, of great range, extent, or amount; as, a man of cyclopedic knowledge.

Cy`clo*pe"dist (-p?"d?st), n. A maker of, or writer for, a cyclopedia.

Cy*clop"ic (s?-kl?p"?k), a. [Gr. &?;&?;&?;&?;&?;, fr. &?;&?;&?;&?;.] Pertaining to the Cyclops; Cyclopean.