rotatorn.

Brit.

/rə(ʊ)ˈteɪtə/, U.S.

/ˈroʊˌteɪdər/

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

Etymology: < classical Latin rotātor person who causes to spin or whirl, in post-classical Latin also denoting either of the trochanters of the femur (1551 or earlier) and the rotator muscle (1649 in the passage translated in quot. 1657 at sense 1b) < rotāt- , past participial stem of rotāre rotate v. + -or -or suffix. In sense 3b after scientific Latin Rotatoria (see rotatory n.); compare earlier rotatory n.

†a. Anatomy. Either of the trochanters of the femur. Also with distinguishing English or Latin word. Obsolete.The greater trochanter was called the rotator magnus (also great rotator); the lesser trochanter, the rotator parvus (also minor), or little (also lesser) rotator.

ΚΠ

1578 J. Banister Hist. Man i. f. 2 ^v The processes of the thighe called Trochanteres, or Rotatores, are more iustly to be termed Appendances, then thynges with Appendances munited.]

1615 H. Crooke Μικροκοσμογραϕια xi. xxxi. 904 This nerue lying vpon the muscles of the loines attaineth to the little Rotator, and is consumed into the two extending muscles of the thigh.

1638 A. Read Man. Anat. Body of Man (new ed.) Explication 569 It may bee seene in the shoulder blade..and in the thigh-bone where the rotator magnus is.

1703 T. Gibson Anat. Humane Bodies Epitomized (ed. 6) v. xxviii. 548 These three are inserted into that dent that is in the top of the great Rotator; or as Bartholin says, into that space that is betwixt the two Rotators.

1726 tr. S. Blankaart Physical Dict. (ed. 7) 283/1 Psoas, Muscles of the Loins..; they descend obliquely upon the Rotator minor of the thigh.

1801 R. Hooper Compend. Med. Dict. (ed. 2) at Bone Some [processes have their name] from their use, as trocanters, rotators, &c.

b. Anatomy and Zoology. More fully rotator muscle. Any muscle by which a limb, appendage, or other part of the body can be rotated. Also with distinguishing Latin or English word.

ΘΚΠ

the world > life > the body > structural parts > muscle > types of muscles > [noun]

sphincter1578

raiser1588

in-muscle?1609

oblique1612

abducens1615

abductor1615

adductor1615

antagonist1615

bender1615

depressor1615

extender1615

flexor1615

levator1615

quadratus1615

rectus1615

retractor1615

sphincter-muscle1615

accelerator1638

bicepsa1641

elevator1646

adducent1649

lifter1649

rotator1657

flector1666

contractor1682

dilater1683

orbicularis palpebrarum1694

transverse muscle1696

tensor muscle1704

biventer1706

extensor1713

attollent1728

constrictor1741

dilator1741

risibles1785

orbicularis oculi1797

obliquus1799

erector1828

extensor-muscle1830

compressor1836

trans-muscle1836

antagonizer1844

motor1846

evertor1848

inflector1851

protractor1853

prime mover1860

orbicular1872

transversalis1872

invertor1875

skeletal muscle1877

dilatator1878

occlusor muscle1878

sphincter1879

pilomotor1892

agonist1896

1657 N. Culpeper & W. Rand tr. J. Riolan Sure Guide vi. xx. 283 The Neck of the Thigh-bone, is somwhat long-fashioned and oblique, that it may pass along the tendon of the Rotator Infernus [L. rotatoris inferni tendonem].

1659 W. Charleton Nat. Hist. Nutrition xi. 196 And the Last respecteth the peculiar motions of particular Muscles; whence some are called Benders, some Extensors; some Elevators, others Depressors; some Adductors, others Abductors; some Rotators.

1676 R. Wiseman Severall Chirurg. Treat. vii. viii. 494 The Triceps, together with the Levidus, and the four little Rotators.

1744 tr. H. Boerhaave Acad. Lect. Theory Physic III. 254 The Rotator Muscles insert their Tendons into the Protuberant Process.

1748 S. Richardson Clarissa VII. 262 Getting me between them..did they by turns fill my ears with an anatomical description of the leg and thigh, running over with terms of art;..to the Acetabulum of the Os Ischion, the Greater Trochanter, Glutes,..and Little Rotators.

1808 J. Barclay Muscular Motions 389 In rolling the arm, the rotators radiad co-operate with the muscles called supinators; the rotators ulnad, with the pronators.

1893 A. S. Eccles Sciatica 74 The action will only be carried to the extent possible without using the external rotators of the thigh.

1969 R. F. Chapman Insects i. 15 The original anterior and posterior rotator muscles of Apterygota have become abductors and adductors in the Pterygota.

1998 Today's Golfer May 88/2 As the body turns away from the ball, the rotator muscles of the right hip reach their maximum range of motion.

a. Something, esp. an apparatus or part of a mechanism, which has a rotatory motion or action.

ΘΚΠ

the world > movement > motion in specific manner > revolution or rotation > [noun] > one who or that which

trendle14..

rotator1770

gyrator1836

1770 Gentleman's Mag. Oct. 470/1 The author of the remarks [sc. W. Kenrick] has constructed a machine which he calls a rotator, and which, though he does not insist that it is..a perpetual motion, will answer all the practical purposes to be expected from that discovery.

1803 Naval Chron. 10 191 The spring part..is fixed to a rotator, or revolving apparatus.

1884 W. H. Greenwood Steel & Iron xi. 214 In the front end of the rotator are the slag-holes.

1930 Jrnl. Sci. Instruments 7 22 It is necessary..to examine the filament completely at any point by rotating it through 360°, and for this purpose a fibre rotator has been designed.

1967 Stain Technol. 42 107 The rotator consists of a 12 inch disc to which 8 glass jars..are held firmly... It is rotated by means of a rubber belt driven by a small electric motor.

1989 Sci. Amer. Nov. 64/3 Skewed magnetic fields are common to a class of stars called oblique rotators.

2006 Rail Infrastructure July–Aug. 46/1 The device between the end of the RRV dipper and the lifting chain is another tilt rotator that has been ‘crowded’ round through 90°.

b. A device for rotating an aerial.

ΘΚΠ

society > communication > telecommunication > radio communications > radio equipment > [noun] > aerial > device for rotating

rotator1947

1947 Pop. Mech. Nov. 230 The signal strength..made the Mims name one of the best-known in the amateur-radio fraternity. Since the war, certain refinements have been made in the rotator unit.

1959 Sears, Roebuck Catal. Spring–Summer 884/2 TV Antenna Rotators... Turns antenna 360° per min.

1988 Harrowsmith Jan. 106/1 (advt.) The entire antenna, amplifier, and the rotator mechanism are completely encased in a durable space-age style radome.

2005 J. Markell Resid. Wiring to 2005 NEC (ed. 7) xiv. 298 In many instances TV antennas are equipped with rotators so they can be directionally adjusted to get the best possible signal.

3. Zoology.

†a. The corona or trochal disc of a rotifer. Obsolete.

ΚΠ

1846 G. A. Mantell Thoughts on Animalcules x. 52 The Rotifera possess a definite form, and rotators formed of cilia.

1854 J. Hogg Microscope ii. ii. 143 (caption) The common Wheel-Animalcule, with its cilia or rotators pointed.

b. = rotatory n. rare. Now historical.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [noun] > member of

rotifer1777

wheel-animal1788

wheel-insect1800

wheel-animalcule1834

rotatory1835

rotator1854

rotatorian1861

wheel-bearer1861

1854 Illustr. Mag. Art 3 153/2 The class of worms are divided into annelids, rotators, and intestinal worms.

1946 Nature 14 Sept. 372/2 He wrote numerous and important papers on Desmids..Rotators, Rhizopods, etc.

4. Mathematics and Science. An object or a hypothetical entity regarded purely as something that rotates.

ΘΚΠ

the world > relative properties > number > mathematical number or quantity > tensor > [noun] > rotor

rotor1873

rotator1879

1879 W. Thomson & P. G. Tait Treat. Nat. Philos. (new ed.) I: Pt. i. §345 The reciprocal of this time we shall call..the rapidity of the system, for convenience of comparison with the frequency of a vibrator or of a rotator.

1902 Notices Proc. Royal Inst. Great Brit. 16 387 The second rotator may be described..as a hard massless ball having a mass = 1 fixed anywhere eccentrically within it, and another mass = 100 fixed at its centre.

1943 H. Margenau & G. M. Murphy Math. Physics & Chem. ix. 286 This represents the sum of the Hamiltonians of a rigid rotator and a harmonic oscillator.

1974 G. Reece tr. F. Hund Hist. Quantum Theory ii. 35 Lorentz attempted to deal with the rotator by means of the formula E(n) = hν(n)n.

2000 J. B. Ott & J. Boerio-Goates Chem. Thermodynamics I. 646 The following equations are used to calculate the anharmonicity and nonrigid rotator corrections to the thermodynamic properties of diatomic molecules.

Compounds

rotator cuff n. Anatomy the upper part of the ligamentous capsule of the shoulder, which includes the tendons of insertion of the supraspinatus, infraspinatus, teres minor, and subscapularis muscles (the last three of which are rotators of the arm); frequently attributive.

ΚΠ

1944 Bull. N.Y. Acad. Med. 20 466 Calcification of the subdeltoid bursa is probably always an end result of calcification of the supraspinatus or other tendons of the rotator cuff.

1975 Arch. Internal Med. 135 521 Rotator cuff tear secondary to chronic synovitis eroding the rotator cuff tendon is a complication of rheumatoid arthritis that has received little attention.

2003 N.Y. Times 22 June iv. 2/4 Clemens keeps his arm strong with regular rotator cuff exercises.

This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).

单词	rotator
释义	rotatorn. Brit. /rə(ʊ)ˈteɪtə/, U.S. /ˈroʊˌteɪdər/ Origin: A borrowing from Latin. Etymon: Latin rotātor. Etymology: < classical Latin rotātor person who causes to spin or whirl, in post-classical Latin also denoting either of the trochanters of the femur (1551 or earlier) and the rotator muscle (1649 in the passage translated in quot. 1657 at sense 1b) < rotāt- , past participial stem of rotāre rotate v. + -or -or suffix. In sense 3b after scientific Latin Rotatoria (see rotatory n.); compare earlier rotatory n. 1. †a. Anatomy. Either of the trochanters of the femur. Also with distinguishing English or Latin word. Obsolete.The greater trochanter was called the rotator magnus (also great rotator); the lesser trochanter, the rotator parvus (also minor), or little (also lesser) rotator. ΚΠ 1578 J. Banister Hist. Man i. f. 2 ^v The processes of the thighe called Trochanteres, or Rotatores, are more iustly to be termed Appendances, then thynges with Appendances munited.] 1615 H. Crooke Μικροκοσμογραϕια xi. xxxi. 904 This nerue lying vpon the muscles of the loines attaineth to the little Rotator, and is consumed into the two extending muscles of the thigh. 1638 A. Read Man. Anat. Body of Man (new ed.) Explication 569 It may bee seene in the shoulder blade..and in the thigh-bone where the rotator magnus is. 1703 T. Gibson Anat. Humane Bodies Epitomized (ed. 6) v. xxviii. 548 These three are inserted into that dent that is in the top of the great Rotator; or as Bartholin says, into that space that is betwixt the two Rotators. 1726 tr. S. Blankaart Physical Dict. (ed. 7) 283/1 Psoas, Muscles of the Loins..; they descend obliquely upon the Rotator minor of the thigh. 1801 R. Hooper Compend. Med. Dict. (ed. 2) at Bone Some [processes have their name] from their use, as trocanters, rotators, &c. b. Anatomy and Zoology. More fully rotator muscle. Any muscle by which a limb, appendage, or other part of the body can be rotated. Also with distinguishing Latin or English word. ΘΚΠ the world > life > the body > structural parts > muscle > types of muscles > [noun] sphincter1578 raiser1588 in-muscle?1609 oblique1612 abducens1615 abductor1615 adductor1615 antagonist1615 bender1615 depressor1615 extender1615 flexor1615 levator1615 quadratus1615 rectus1615 retractor1615 sphincter-muscle1615 accelerator1638 bicepsa1641 elevator1646 adducent1649 lifter1649 rotator1657 flector1666 contractor1682 dilater1683 orbicularis palpebrarum1694 transverse muscle1696 tensor muscle1704 biventer1706 extensor1713 attollent1728 constrictor1741 dilator1741 risibles1785 orbicularis oculi1797 obliquus1799 erector1828 extensor-muscle1830 compressor1836 trans-muscle1836 antagonizer1844 motor1846 evertor1848 inflector1851 protractor1853 prime mover1860 orbicular1872 transversalis1872 invertor1875 skeletal muscle1877 dilatator1878 occlusor muscle1878 sphincter1879 pilomotor1892 agonist1896 1657 N. Culpeper & W. Rand tr. J. Riolan Sure Guide vi. xx. 283 The Neck of the Thigh-bone, is somwhat long-fashioned and oblique, that it may pass along the tendon of the Rotator Infernus [L. rotatoris inferni tendonem]. 1659 W. Charleton Nat. Hist. Nutrition xi. 196 And the Last respecteth the peculiar motions of particular Muscles; whence some are called Benders, some Extensors; some Elevators, others Depressors; some Adductors, others Abductors; some Rotators. 1676 R. Wiseman Severall Chirurg. Treat. vii. viii. 494 The Triceps, together with the Levidus, and the four little Rotators. 1744 tr. H. Boerhaave Acad. Lect. Theory Physic III. 254 The Rotator Muscles insert their Tendons into the Protuberant Process. 1748 S. Richardson Clarissa VII. 262 Getting me between them..did they by turns fill my ears with an anatomical description of the leg and thigh, running over with terms of art;..to the Acetabulum of the Os Ischion, the Greater Trochanter, Glutes,..and Little Rotators. 1808 J. Barclay Muscular Motions 389 In rolling the arm, the rotators radiad co-operate with the muscles called supinators; the rotators ulnad, with the pronators. 1893 A. S. Eccles Sciatica 74 The action will only be carried to the extent possible without using the external rotators of the thigh. 1969 R. F. Chapman Insects i. 15 The original anterior and posterior rotator muscles of Apterygota have become abductors and adductors in the Pterygota. 1998 Today's Golfer May 88/2 As the body turns away from the ball, the rotator muscles of the right hip reach their maximum range of motion. 2. a. Something, esp. an apparatus or part of a mechanism, which has a rotatory motion or action. ΘΚΠ the world > movement > motion in specific manner > revolution or rotation > [noun] > one who or that which trendle14.. rotator1770 gyrator1836 1770 Gentleman's Mag. Oct. 470/1 The author of the remarks [sc. W. Kenrick] has constructed a machine which he calls a rotator, and which, though he does not insist that it is..a perpetual motion, will answer all the practical purposes to be expected from that discovery. 1803 Naval Chron. 10 191 The spring part..is fixed to a rotator, or revolving apparatus. 1884 W. H. Greenwood Steel & Iron xi. 214 In the front end of the rotator are the slag-holes. 1930 Jrnl. Sci. Instruments 7 22 It is necessary..to examine the filament completely at any point by rotating it through 360°, and for this purpose a fibre rotator has been designed. 1967 Stain Technol. 42 107 The rotator consists of a 12 inch disc to which 8 glass jars..are held firmly... It is rotated by means of a rubber belt driven by a small electric motor. 1989 Sci. Amer. Nov. 64/3 Skewed magnetic fields are common to a class of stars called oblique rotators. 2006 Rail Infrastructure July–Aug. 46/1 The device between the end of the RRV dipper and the lifting chain is another tilt rotator that has been ‘crowded’ round through 90°. b. A device for rotating an aerial. ΘΚΠ society > communication > telecommunication > radio communications > radio equipment > [noun] > aerial > device for rotating rotator1947 1947 Pop. Mech. Nov. 230 The signal strength..made the Mims name one of the best-known in the amateur-radio fraternity. Since the war, certain refinements have been made in the rotator unit. 1959 Sears, Roebuck Catal. Spring–Summer 884/2 TV Antenna Rotators... Turns antenna 360° per min. 1988 Harrowsmith Jan. 106/1 (advt.) The entire antenna, amplifier, and the rotator mechanism are completely encased in a durable space-age style radome. 2005 J. Markell Resid. Wiring to 2005 NEC (ed. 7) xiv. 298 In many instances TV antennas are equipped with rotators so they can be directionally adjusted to get the best possible signal. 3. Zoology. †a. The corona or trochal disc of a rotifer. Obsolete. ΚΠ 1846 G. A. Mantell Thoughts on Animalcules x. 52 The Rotifera possess a definite form, and rotators formed of cilia. 1854 J. Hogg Microscope ii. ii. 143 (caption) The common Wheel-Animalcule, with its cilia or rotators pointed. b. = rotatory n. rare. Now historical. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [noun] > member of rotifer1777 wheel-animal1788 wheel-insect1800 wheel-animalcule1834 rotatory1835 rotator1854 rotatorian1861 wheel-bearer1861 1854 Illustr. Mag. Art 3 153/2 The class of worms are divided into annelids, rotators, and intestinal worms. 1946 Nature 14 Sept. 372/2 He wrote numerous and important papers on Desmids..Rotators, Rhizopods, etc. 4. Mathematics and Science. An object or a hypothetical entity regarded purely as something that rotates. ΘΚΠ the world > relative properties > number > mathematical number or quantity > tensor > [noun] > rotor rotor1873 rotator1879 1879 W. Thomson & P. G. Tait Treat. Nat. Philos. (new ed.) I: Pt. i. §345 The reciprocal of this time we shall call..the rapidity of the system, for convenience of comparison with the frequency of a vibrator or of a rotator. 1902 Notices Proc. Royal Inst. Great Brit. 16 387 The second rotator may be described..as a hard massless ball having a mass = 1 fixed anywhere eccentrically within it, and another mass = 100 fixed at its centre. 1943 H. Margenau & G. M. Murphy Math. Physics & Chem. ix. 286 This represents the sum of the Hamiltonians of a rigid rotator and a harmonic oscillator. 1974 G. Reece tr. F. Hund Hist. Quantum Theory ii. 35 Lorentz attempted to deal with the rotator by means of the formula E(n) = hν(n)n. 2000 J. B. Ott & J. Boerio-Goates Chem. Thermodynamics I. 646 The following equations are used to calculate the anharmonicity and nonrigid rotator corrections to the thermodynamic properties of diatomic molecules. Compounds rotator cuff n. Anatomy the upper part of the ligamentous capsule of the shoulder, which includes the tendons of insertion of the supraspinatus, infraspinatus, teres minor, and subscapularis muscles (the last three of which are rotators of the arm); frequently attributive. ΚΠ 1944 Bull. N.Y. Acad. Med. 20 466 Calcification of the subdeltoid bursa is probably always an end result of calcification of the supraspinatus or other tendons of the rotator cuff. 1975 Arch. Internal Med. 135 521 Rotator cuff tear secondary to chronic synovitis eroding the rotator cuff tendon is a complication of rheumatoid arthritis that has received little attention. 2003 N.Y. Times 22 June iv. 2/4 Clemens keeps his arm strong with regular rotator cuff exercises. This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022). < n.1615
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