† poloidadj.n.

Origin: A borrowing from Greek, combined with an English element; modelled on a French lexical item. Etymons: Greek πόλος , -oid suffix.

Etymology: < ancient Greek πόλος axle (see pole n.²) + -oid suffix, after French polhodie, polodie, noun (see polhode n.). Compare serpoloid n. With use as noun compare slightly later polhode n. N.E.D. (1907) gives the pronunciation as (pō^u·loid) /ˈpəʊlɔɪd/.

Geometry. Obsolete. rare.

A. adj.

Of the nature of a polhode.

ΚΠ

1862 A. Cayley Coll. Math. Papers IV. 571 The ‘Extrait’..establishes also the notions of the Poloid and Serpoloid curves.

B. n.

= polhode n.

ΘΚΠ

the world > relative properties > number > geometry > curve > [noun] > polholde or herpolhode

poloid1862

serpoloid1862

polhode1866

herpolhode1868

1862 A. Cayley Coll. Math. Papers IV. 572 The pole of the instantaneous axis describes on the ellipsoid a certain curve, the ‘Poloid’, which is the locus of all the points for which the perpendicular on the tangent plane has a given constant value.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2020).

单词	poloid
释义	† poloidadj.n. Origin: A borrowing from Greek, combined with an English element; modelled on a French lexical item. Etymons: Greek πόλος , -oid suffix. Etymology: < ancient Greek πόλος axle (see pole n.²) + -oid suffix, after French polhodie, polodie, noun (see polhode n.). Compare serpoloid n. With use as noun compare slightly later polhode n. N.E.D. (1907) gives the pronunciation as (pō^u·loid) /ˈpəʊlɔɪd/. Geometry. Obsolete. rare. A. adj. Of the nature of a polhode. ΚΠ 1862 A. Cayley Coll. Math. Papers IV. 571 The ‘Extrait’..establishes also the notions of the Poloid and Serpoloid curves. B. n. = polhode n. ΘΚΠ the world > relative properties > number > geometry > curve > [noun] > polholde or herpolhode poloid1862 serpoloid1862 polhode1866 herpolhode1868 1862 A. Cayley Coll. Math. Papers IV. 572 The pole of the instantaneous axis describes on the ellipsoid a certain curve, the ‘Poloid’, which is the locus of all the points for which the perpendicular on the tangent plane has a given constant value. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2020). < adj.n.1862
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