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| Cycloidei | ‖n. pl. [ NL., fr. Gr. ky`klos circle + -oid. ] (Zool.) 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. [ 1913 Webster ] | | Cycloid | n. [ Cyclo- + -oid: cf. F. cycloïde. ] (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. [ 1913 Webster ] ☞ 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. [ 1913 Webster ] | | Cycloid | a. (Zool.) Of or pertaining to the Cycloidei. [ 1913 Webster ]
Cycloid scale (Zool.), a fish scale which is thin and shows concentric lines of growth, without serrations on the margin. [ 1913 Webster ]
| | Cycloid | n. (Zool.) One of the Cycloidei. [ 1913 Webster ] | | Cycloidal | a. Pertaining to, or resembling, a cycloid; as, the cycloidal space is the space contained between a cycloid and its base. [ 1913 Webster ]
Cycloidal engine. See Geometric lathe. [ 1913 Webster ]
| | Cycloidian | a. & n. (Zool.) Same as 2d and 3d Cycloid. [ 1913 Webster ] |
| | cycloid | (ไซ'คลอยด์) adj. คล้ายวงกลม, เป็นรูปวงแหวน |
| | cycloid | ไซคลอยด์ [คณิตศาสตร์๑๙ ก.ค. ๒๕๔๗] |
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| | cycloid | (n) a line generated by a point on a circle rolling along a straight line | | cycloid | (adj) resembling a circle, Syn. cycloidal |
| | Cycloid | n. [ Cyclo- + -oid: cf. F. cycloïde. ] (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. [ 1913 Webster ] ☞ 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. [ 1913 Webster ] | | Cycloid | a. (Zool.) Of or pertaining to the Cycloidei. [ 1913 Webster ]
Cycloid scale (Zool.), a fish scale which is thin and shows concentric lines of growth, without serrations on the margin. [ 1913 Webster ]
| | Cycloid | n. (Zool.) One of the Cycloidei. [ 1913 Webster ] | | Cycloidal | a. Pertaining to, or resembling, a cycloid; as, the cycloidal space is the space contained between a cycloid and its base. [ 1913 Webster ]
Cycloidal engine. See Geometric lathe. [ 1913 Webster ]
| | Cycloidei | ‖n. pl. [ NL., fr. Gr. ky`klos circle + -oid. ] (Zool.) 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. [ 1913 Webster ] | | Cycloidian | a. & n. (Zool.) Same as 2d and 3d Cycloid. [ 1913 Webster ] |
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