BRONTOTHERIUM
Bron`to*the"ri*um, n. Etym: [NL., fr. Gr. (Paleon.)
Defn: A genus of large extinct mammals from the miocene strata of western North America. They were allied to the rhinoceros, but the skull bears a pair of powerful horn cores in front of the orbits, and the fore feet were four-toed. See Illustration in Appendix.
BRONTOZOUM
Bron`to*zo"um, n. Etym: [NL., fr. Gr. (Paleon.)
Defn: An extinct animal of large size, known from its three-toed footprints in Mesozoic sandstone.
Note: The tracks made by these reptiles are found eighteen inches in length, and were formerly referred to gigantic birds; but the discovery of large bipedal three-toed dinosaurs has suggested that they were made by those reptiles.
BRONZE Bronze, n. Etym: [F. bronze, fr. It. bronzo brown, fr. OHG. br, G. braun. See Brown, a.]
1. 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.
2. A statue, bust, etc., cast in bronze. A print, a bronze, a flower, a root. Prior.
3. A yellowish or reddish brown, the color of bronze; also, a pigment or powder for imitating bronze.
4. Boldness; impudence; "brass." Imbrowned with native bronze, lo! Henley stands. Pope. Aluminium bronze. See under Aluminium. — Bronze age, an age of the world which followed the stone age, and was characterized by the use of implements and ornaments of copper or bronze. — Bronze powder, a metallic powder, used with size or in combination with painting, to give the appearance of bronze, gold, or other metal, to any surface. — Phosphor bronze and Silicious or Silicium bronze are made by adding phosphorus and silicon respectively to ordinary bronze, and are characterized by great tenacity.