spectacle-glassn.
1. A lens of a pair of spectacles.
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the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [noun] > spectacles > lens of spectacles
spectacle-glassa1582
spectacle eye1862
lens1875
a1582 W. Bourne Treat. Properties of Glasses v, in J. O. Halliwell Rara Mathematica (1839) 40 For makinge of the smallest sorte of them, commonly called spectacle glasses.
1697 Countess D'Aunoy's Trav. (1706) 146 Proportionably as a Man's Fortune rises, he increases in the largeness of his Spectacle-Glasses and wears them higher upon his Nose.
1761–9 tr. Voltaire Wks. XXVI. 196 A lentular spectacle-glass.
1852 H. B. Stowe Uncle Tom's Cabin I. ix. 128 He..seemed particularly busy in clearing his throat and wiping his spectacle-glasses.
1879 Cassell's Techn. Educator (new ed.) II. 177/1 Preference is usually given to bi-convex and bi-concave spectacle glasses.
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the world > physical sensation > sight and vision > optical instruments > lens > [noun]
glass1545
optic1599
optic glass1607
perspicil1611
lenticular1658
spectacle-glass1682
lens1693
speculum1756
optical1944
lenslet1956
1682 N. Grew Anat. Plants i. i. 2 Magnified with a good Spectacle-Glass.
1682 N. Grew Anat. Plants i. ii. 20 A lesser sort; which, by the help only of a good Spectacle Glass may be observ'd.
a1697 J. Aubrey Brief Lives (1898) I. 283 Anno 1678, he [Halley] added a spectacle-glasse to the shadowe-vane of the lesser arch of the sea-quadrant (or back-staffe).
This entry has not yet been fully updated (first published 1913; most recently modified version published online December 2021).
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