toricadj.n.

Brit.

/ˈtɒrɪk/,

/ˈtɔːrɪk/, U.S.

/ˈtɔrɪk/

Etymology: compare tor- (in torus n.) + -ic suffix.

Of or pertaining to a torus (see torus n. 4); having the form of a torus or a portion of one; spec. in Ophthalmology, applied to a lens with one surface curved like part of a torus, the radius of curvature having a minimum value in one direction and a maximum value in the direction at right angles to it; also as n., such a lens.

ΘΚΠ

the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [adjective] > types of spectacles > types of spectacle lens

astigmatic1881

toric1890

trifocal1921

multifocal1928

pebble-grained1943

omnifocal1962

the world > space > shape > curvature > roundness > [adjective] > annular > like or relating to torus

toroidal1881

toric1890

the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > relating to solid of revolution

spirical1788

hyperboloidal1879

toroidal1881

toric1890

spiric1891

the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [noun] > spectacles > lens of spectacles > types of

pebble1688

distance lens1907

omnifocal1962

toric1962

varifocal1975

1890 Trans. Amer. Ophthalmol. Soc. 26th Ann. Meeting 708 Such toric surfaces are concave, and, when sunk in a plate of glass, afford typical examples of concavo-plane toric lenses.

1900 Buch's Handbk. Med. Sc. I. 595 A concave spherical combined with a convex toric surface.

1954 S. Duke-Elder Parsons' Dis. Eye (ed. 12) iv. 41 A regularly astigmatic surface is said to have a toric curvature.

1962 L. S. Sasieni Princ. & Pract. Optical Dispensing x. 264 ‘Commercial’ torics of minus powers are usually transposed to the form which provides a plus cylinder.

1973 Nature 21 Dec. 479/2 A toric segment of bore diameter d, generator circle diameter D and length s measured along the central axis.

1978 J. Parr Introd. Ophthalmol. ii. 44/1 A cylindrical curvature can be combined with a spherical curvature in a lens which is then called a toric surfaced lens. In astigmatism the surface of the cornea is toric instead of spherical.

This entry has not yet been fully updated (first published 1913; most recently modified version published online March 2022).

单词	toric
释义	toricadj.n. Brit. /ˈtɒrɪk/, /ˈtɔːrɪk/, U.S. /ˈtɔrɪk/ Etymology: compare tor- (in torus n.) + -ic suffix. Of or pertaining to a torus (see torus n. 4); having the form of a torus or a portion of one; spec. in Ophthalmology, applied to a lens with one surface curved like part of a torus, the radius of curvature having a minimum value in one direction and a maximum value in the direction at right angles to it; also as n., such a lens. ΘΚΠ the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [adjective] > types of spectacles > types of spectacle lens astigmatic1881 toric1890 trifocal1921 multifocal1928 pebble-grained1943 omnifocal1962 the world > space > shape > curvature > roundness > [adjective] > annular > like or relating to torus toroidal1881 toric1890 the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > relating to solid of revolution spirical1788 hyperboloidal1879 toroidal1881 toric1890 spiric1891 the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [noun] > spectacles > lens of spectacles > types of pebble1688 distance lens1907 omnifocal1962 toric1962 varifocal1975 1890 Trans. Amer. Ophthalmol. Soc. 26th Ann. Meeting 708 Such toric surfaces are concave, and, when sunk in a plate of glass, afford typical examples of concavo-plane toric lenses. 1900 Buch's Handbk. Med. Sc. I. 595 A concave spherical combined with a convex toric surface. 1954 S. Duke-Elder Parsons' Dis. Eye (ed. 12) iv. 41 A regularly astigmatic surface is said to have a toric curvature. 1962 L. S. Sasieni Princ. & Pract. Optical Dispensing x. 264 ‘Commercial’ torics of minus powers are usually transposed to the form which provides a plus cylinder. 1973 Nature 21 Dec. 479/2 A toric segment of bore diameter d, generator circle diameter D and length s measured along the central axis. 1978 J. Parr Introd. Ophthalmol. ii. 44/1 A cylindrical curvature can be combined with a spherical curvature in a lens which is then called a toric surfaced lens. In astigmatism the surface of the cornea is toric instead of spherical. This entry has not yet been fully updated (first published 1913; most recently modified version published online March 2022). < adj.n.1890
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