annulusn.

/ˈænjʊləs/

Forms: Pl. -i.

Etymology: Latin, erroneous mediæval spelling of ānulus a ring, dim. of rare ānus a rounding, a circular form (see Lewis and Short).

1. A ring, or ring-like body (in various technical applications).

ΘΚΠ

the world > space > shape > curvature > roundness > [noun] > annular quality > ring

ringeOE

circlec1305

cerceaus1340

hoop1530

hoop-ring1545

annulus1563

ringleta1616

annule1681

zone1752

1563 J. Shute First Groundes Archit. sig. Ci, Thre of them ye shal geue to Echinus..the fourth part geue to Annulus.

1713 W. Derham Physico-theol. iv. xii. 223 These Rings have a curious Apparatus of Muscles, enabling those Creatures..to dilate, extend, or contract their Annuli.

1761 L. Sterne Life Tristram Shandy III. x. 30 By the..return of the two ends of the strings through the annulus or noose made by the second implication of them.

1794 R. J. Sulivan View Nature II There is a prodigious annulus encompassing Saturn.

1853 E. K. Kane U.S. Grinnell Exped. (1856) xix. 143 An annulus of Arctic shrubs and trees.

2. Geom. ‘The name of a ring, or solid formed by the revolution of a circle about a straight line exterior to its circumference as an axis, and in the plane of the said circle.’ Penny Cycl. 1834.

ΘΚΠ

the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > solid of revolution > formed from curve > torus

anchor ring1783

annulus1802

tore1867

torus1870

1802 J. Playfair Illustr. Huttonian Theory 508 If..the ring is a solid annulus..it may be so constituted that the attraction of Saturn..may produce a force perpendicular to its surface.

3. Bot.

Thesaurus »

Categories »

a. In ferns: The ring of cells which partially surrounds the sporangia.

Thesaurus »

Categories »

b. In mosses: The elastic external ring of epidermal cells with which the brim of the sporangium is furnished.

c. In fungi: Sometimes applied to the portion of the veil, which remains like a collar round the stalk.

ΘΚΠ

the world > plants > particular plants > fungi > [noun] > parts of > cells and tissue

chive1721

spawn1731

mushroom spawn1753

volva1753

ring1777

veil1777

curtain1796

wrapper1796

fungin1813

subiculum1821

cortina1832

velum1832

mycelium1836

uterus1836

gleba1847

hypostroma1855

sulcus1856

rhizopod1859

tigellule1860

trichophore1860

hypha1866

hypothecium1866

rhizopodium1866

annulus1871

capillitium1871

acervulus1872

weft1875

capsule1883

clamp-connection1887

periphysis1887

chain gemma1893

trumpet hypha1900

metula1915

monokaryon1935

1830 J. Lindley Introd. Nat. Syst. Bot. 313 The resemblance between the midrib of one of these scales and the annulus of a Polypodium.

1863 M. J. Berkeley Brit. Mosses 311 Annulus, a little ring, which is often elastic, at the rim of the mouth of the sporangium.

1871 M. C. Cooke Fungi (1874) 19 The collar adherent to the stem falls back, and thenceforth is known as the annulus or ring.

4. Astron. A ring of light, as in an annular eclipse.

ΘΚΠ

the world > the universe > sun > sunlight > [noun] > eclipse > aureole

aureole1858

annulus1871

aureola1871

1871 tr. H. Schellen Spectrum Anal. §54. 256 Forming an annulus around the moon of about 8′ in diameter.

Draft additions December 2005

Anat. A ring of dense fibrous tissue surrounding each of the valvular orifices of the heart, forming a point of attachment for the valve leaflets and for myocardial fibres. Also called annulus fibrosus.

ΚΠ

1923 Heart 10 22 We have been unable to find a description of the annulus and its limits, sufficient for our purposes.

1971 Ann. Thoracic Surg. 11 336 (title) Unusual complications during mitral valve replacement in the presence of calcification of the annulus.

2005 Ann. Thoracic Surg. 79 1662 At follow-up, there was no evidence of [pulmonary] valve failure or tissue growth within the valve annulus.

This entry has not yet been fully updated (first published 1884; most recently modified version published online November 2010).

单词	annulus
释义	annulusn. /ˈænjʊləs/ Forms: Pl. -i. Etymology: Latin, erroneous mediæval spelling of ānulus a ring, dim. of rare ānus a rounding, a circular form (see Lewis and Short). 1. A ring, or ring-like body (in various technical applications). ΘΚΠ the world > space > shape > curvature > roundness > [noun] > annular quality > ring ringeOE circlec1305 cerceaus1340 hoop1530 hoop-ring1545 annulus1563 ringleta1616 annule1681 zone1752 1563 J. Shute First Groundes Archit. sig. Ci, Thre of them ye shal geue to Echinus..the fourth part geue to Annulus. 1713 W. Derham Physico-theol. iv. xii. 223 These Rings have a curious Apparatus of Muscles, enabling those Creatures..to dilate, extend, or contract their Annuli. 1761 L. Sterne Life Tristram Shandy III. x. 30 By the..return of the two ends of the strings through the annulus or noose made by the second implication of them. 1794 R. J. Sulivan View Nature II There is a prodigious annulus encompassing Saturn. 1853 E. K. Kane U.S. Grinnell Exped. (1856) xix. 143 An annulus of Arctic shrubs and trees. 2. Geom. ‘The name of a ring, or solid formed by the revolution of a circle about a straight line exterior to its circumference as an axis, and in the plane of the said circle.’ Penny Cycl. 1834. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > solid of revolution > formed from curve > torus anchor ring1783 annulus1802 tore1867 torus1870 1802 J. Playfair Illustr. Huttonian Theory 508 If..the ring is a solid annulus..it may be so constituted that the attraction of Saturn..may produce a force perpendicular to its surface. 3. Bot. Thesaurus » Categories » a. In ferns: The ring of cells which partially surrounds the sporangia. Thesaurus » Categories » b. In mosses: The elastic external ring of epidermal cells with which the brim of the sporangium is furnished. c. In fungi: Sometimes applied to the portion of the veil, which remains like a collar round the stalk. ΘΚΠ the world > plants > particular plants > fungi > [noun] > parts of > cells and tissue chive1721 spawn1731 mushroom spawn1753 volva1753 ring1777 veil1777 curtain1796 wrapper1796 fungin1813 subiculum1821 cortina1832 velum1832 mycelium1836 uterus1836 gleba1847 hypostroma1855 sulcus1856 rhizopod1859 tigellule1860 trichophore1860 hypha1866 hypothecium1866 rhizopodium1866 annulus1871 capillitium1871 acervulus1872 weft1875 capsule1883 clamp-connection1887 periphysis1887 chain gemma1893 trumpet hypha1900 metula1915 monokaryon1935 1830 J. Lindley Introd. Nat. Syst. Bot. 313 The resemblance between the midrib of one of these scales and the annulus of a Polypodium. 1863 M. J. Berkeley Brit. Mosses 311 Annulus, a little ring, which is often elastic, at the rim of the mouth of the sporangium. 1871 M. C. Cooke Fungi (1874) 19 The collar adherent to the stem falls back, and thenceforth is known as the annulus or ring. 4. Astron. A ring of light, as in an annular eclipse. ΘΚΠ the world > the universe > sun > sunlight > [noun] > eclipse > aureole aureole1858 annulus1871 aureola1871 1871 tr. H. Schellen Spectrum Anal. §54. 256 Forming an annulus around the moon of about 8′ in diameter. Draft additions December 2005 Anat. A ring of dense fibrous tissue surrounding each of the valvular orifices of the heart, forming a point of attachment for the valve leaflets and for myocardial fibres. Also called annulus fibrosus. ΚΠ 1923 Heart 10 22 We have been unable to find a description of the annulus and its limits, sufficient for our purposes. 1971 Ann. Thoracic Surg. 11 336 (title) Unusual complications during mitral valve replacement in the presence of calcification of the annulus. 2005 Ann. Thoracic Surg. 79 1662 At follow-up, there was no evidence of [pulmonary] valve failure or tissue growth within the valve annulus. This entry has not yet been fully updated (first published 1884; most recently modified version published online November 2010). < n.1563
随便看	deoxidating deoxidation deoxidations deoxidator deoxidisation deoxidisations deoxidise deoxidised deoxidiser deoxidisers deoxidises deoxidising deoxidization deoxidizations deoxidize deoxidized deoxidizement deoxidizer deoxidizers deoxidizes deoxidizing deoxy deoxy- deoxycorticosterone deoxycorticosterones