cycloidaladj.

/sʌɪˈklɔɪd(ə)l/

/sɪˈklɔɪd(ə)l/

Etymology: Formed as cycloid n. + -al suffix¹.

1. Geometry, etc. Of, pertaining to, or of the form of a cycloid. cycloidal engine: an instrument used in engraving an ‘engine-turned design’ upon the plates for bank-notes, etc., as a precaution against counterfeiting; the graver-point having a motion compounded of translation and rotation. cycloidal paddle: a name given to a paddle-wheel in which each float is divided longitudinally into several strips in a slightly retreating order, en echelon, so as to lessen the concussion and make the resistance more uniform (Knight). cycloidal pendulum: a pendulum constructed to swing in a cycloid, so as to be perfectly isochronous.

ΘΚΠ

the world > relative properties > number > geometry > curve > [adjective] > generated by revolution of point

cycloidal1704

epicycloidal1706

cycloidical1793

trochoidal1799

hypocycloidal1881

1704 J. Harris Lexicon Technicum I. at Cycloid The space within this Curve and the Subtense..is called the Cycloidal Space.

1830 H. Kater & D. Lardner Treat. Mechanics xi. 159 Availing himself of this property of the curve, Huygens constructed his cycloidal pendulum.

1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 122 The upper part of the pendulum is a double cord hanging between two cycloidal cheeks to give a cycloidal path to the bob.

2. Zoology. = cycloid adj. (a).

ΘΚΠ

the world > animals > fish > parts of fish > [adjective] > having scales > of scales of specific type

fulcral1809

placoid1842

cycloid1847

ctenoid1872

cycloidal1872

1872 H. A. Nicholson Man. Palæontol. 326 The scales..are cycloidal in shape, and are arranged in an imbricate manner.

Derivatives

cyˈcloidally adv. in the form of a cycloid.

ΘΚΠ

the world > relative properties > number > geometry > curve > [adverb]

cycloidally1728

elliptically1831

hodographically1847

trochoidally1857

sinusoidally1888

1728 E. Chambers Cycl. at Phonicks A smooth Wall either plain or arch'd, especially cycloidally or elliptically.

This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2022).

单词	cycloidal
释义	cycloidaladj. /sʌɪˈklɔɪd(ə)l//sɪˈklɔɪd(ə)l/ Etymology: Formed as cycloid n. + -al suffix¹. 1. Geometry, etc. Of, pertaining to, or of the form of a cycloid. cycloidal engine: an instrument used in engraving an ‘engine-turned design’ upon the plates for bank-notes, etc., as a precaution against counterfeiting; the graver-point having a motion compounded of translation and rotation. cycloidal paddle: a name given to a paddle-wheel in which each float is divided longitudinally into several strips in a slightly retreating order, en echelon, so as to lessen the concussion and make the resistance more uniform (Knight). cycloidal pendulum: a pendulum constructed to swing in a cycloid, so as to be perfectly isochronous. ΘΚΠ the world > relative properties > number > geometry > curve > [adjective] > generated by revolution of point cycloidal1704 epicycloidal1706 cycloidical1793 trochoidal1799 hypocycloidal1881 1704 J. Harris Lexicon Technicum I. at Cycloid The space within this Curve and the Subtense..is called the Cycloidal Space. 1830 H. Kater & D. Lardner Treat. Mechanics xi. 159 Availing himself of this property of the curve, Huygens constructed his cycloidal pendulum. 1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 122 The upper part of the pendulum is a double cord hanging between two cycloidal cheeks to give a cycloidal path to the bob. 2. Zoology. = cycloid adj. (a). ΘΚΠ the world > animals > fish > parts of fish > [adjective] > having scales > of scales of specific type fulcral1809 placoid1842 cycloid1847 ctenoid1872 cycloidal1872 1872 H. A. Nicholson Man. Palæontol. 326 The scales..are cycloidal in shape, and are arranged in an imbricate manner. Derivatives cyˈcloidally adv. in the form of a cycloid. ΘΚΠ the world > relative properties > number > geometry > curve > [adverb] cycloidally1728 elliptically1831 hodographically1847 trochoidally1857 sinusoidally1888 1728 E. Chambers Cycl. at Phonicks A smooth Wall either plain or arch'd, especially cycloidally or elliptically. This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2022). < adj.1704
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