† peritrochiumn.

Forms: 1600s–1800s peritrochium, 1700s peritrochia.

Origin: A borrowing from Latin. Etymon: Latin peritrochium.

Etymology: < post-classical Latin peritrochium (1671; 1644 as axis in peritrochio : see axis in peritrochio at axis n.¹ 1a) < Hellenistic Greek περιτρόχιον wheel revolving round an axle < ancient Greek περίτροχος circular, round (see peritroch n.) + -ιον , suffix forming nouns (compare -y suffix⁴). N.E.D. (1905) gives the pronunciation as (peritrō^u·kiɒ̆m) /pɛrɪˈtrəʊkɪəm/.

Mechanics. Obsolete.

A wheel, as part of the mechanical power called the wheel and axle. Cf. axis in peritrochio at axis n.¹ 1a.

ΘΚΠ

society > occupation and work > equipment > machine > parts of machines > parts which provide power > [noun] > mechanical powers > one of

screw1570

lever1648

wedge1648

peritrochium1704

wheel and axle (also axis)1773

1704 J. Harris Lexicon Technicum I. (at cited word) The use of this Peritrochium, is to make the Cylinder or Axis be turned the more easily by the means of Staves or Levers, which are fix'd in its Circumference.

1741 Mem. Martinus Scriblerus 21 in A. Pope Wks. II He found that Marbles taught him Percussion and the Laws of Motion;..Whirligigs the Axis and Peritrochia.

1751 T. Smollett Peregrine Pickle IV. ciii. 131 The engineer proceeded to the illustration of his mechanicks, tilting up his hand like a ballance,..and turning it round, with the momentum of a screw or peritrochium.

1871 L. Colange Zell's Pop. Encycl. II. 591/1 Peritrochium, a wheel or circle concentric with the base of a cylinder, and movable, together with it, about an axis.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2022).

单词	peritrochium
释义	† peritrochiumn. Forms: 1600s–1800s peritrochium, 1700s peritrochia. Origin: A borrowing from Latin. Etymon: Latin peritrochium. Etymology: < post-classical Latin peritrochium (1671; 1644 as axis in peritrochio : see axis in peritrochio at axis n.¹ 1a) < Hellenistic Greek περιτρόχιον wheel revolving round an axle < ancient Greek περίτροχος circular, round (see peritroch n.) + -ιον , suffix forming nouns (compare -y suffix⁴). N.E.D. (1905) gives the pronunciation as (peritrō^u·kiɒ̆m) /pɛrɪˈtrəʊkɪəm/. Mechanics. Obsolete. A wheel, as part of the mechanical power called the wheel and axle. Cf. axis in peritrochio at axis n.¹ 1a. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > parts which provide power > [noun] > mechanical powers > one of screw1570 lever1648 wedge1648 peritrochium1704 wheel and axle (also axis)1773 1704 J. Harris Lexicon Technicum I. (at cited word) The use of this Peritrochium, is to make the Cylinder or Axis be turned the more easily by the means of Staves or Levers, which are fix'd in its Circumference. 1741 Mem. Martinus Scriblerus 21 in A. Pope Wks. II He found that Marbles taught him Percussion and the Laws of Motion;..Whirligigs the Axis and Peritrochia. 1751 T. Smollett Peregrine Pickle IV. ciii. 131 The engineer proceeded to the illustration of his mechanicks, tilting up his hand like a ballance,..and turning it round, with the momentum of a screw or peritrochium. 1871 L. Colange Zell's Pop. Encycl. II. 591/1 Peritrochium, a wheel or circle concentric with the base of a cylinder, and movable, together with it, about an axis. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2022). < n.1704
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