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speculum
s p e c u l u m hex:#115;#112;#101;#99;#117;#108;#117;#109;
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- Speculum - pl. - of Speculum
- Speculum - n. - A mirror, or looking-glass; especially, a metal mirror, as in Greek and Roman archaeology.
- Speculum - n. - A reflector of polished metal, especially one used in reflecting telescopes. See Speculum metal, below.
- Speculum - n. - An instrument for dilating certain passages of the body, and throwing light within them, thus facilitating examination or surgical operations.
- Speculum - n. - A bright and lustrous patch of color found on the wings of ducks and some other birds. It is usually situated on the distal portions of the secondary quills, and is much more brilliant in the adult male than in the female.
- Tin - n. - An elementary substance found as an oxide in the mineral cassiterite, and reduced as a soft white crystalline metal, malleable at ordinary temperatures, but brittle when heated. It is not easily oxidized in the air, and is used chiefly to coat iron to protect it from rusting, in the form of tin foil with mercury to form the reflective surface of mirrors, and in solder, bronze, speculum metal, and other alloys. Its compounds are designated as stannous, or stannic. Symbol Sn (Stannum). Atomic weight 117.4.
- Meatoscope - n. - A speculum for examining a natural passage, as the urethra.
- Speculum - n. - A reflector of polished metal, especially one used in reflecting telescopes. See Speculum metal, below.
- Bronze - a. - An alloy of copper and tin, to which small proportions of other metals, especially zinc, are sometimes added. It is hard and sonorous, and is used for statues, bells, cannon, etc., the proportions of the ingredients being varied to suit the particular purposes. The varieties containing the higher proportions of tin are brittle, as in bell metal and speculum metal.
- Teal - n. - Any one of several species of small fresh-water ducks of the genus Anas and the subgenera Querquedula and Nettion. The male is handsomely colored, and has a bright green or blue speculum on the wings.