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tempering

(Encyclopedia)tempering, process involving slow and moderate heating to increase the hardness and toughness of metals that have undergone previous heat treatment. Metals are usually hardened (see hardening) by bein...

Bell, Derrick Albert, Jr.

(Encyclopedia)Bell, Derrick Albert, Jr., 1930–2011, American lawyer, legal scholar, and educator, b. Pittsburgh, Pa., grad. Duquesne Univ. (A.B., 1952), Univ. of Pittsburgh Law School (LL.B., 1957). Known for his...

tree frog

(Encyclopedia)tree frog, name for any of the small tree- or shrub-inhabiting frogs of the family Hylidae, characterized by an adhesive disk on the tip of each of the clawlike toes. This family has about 300 species...

bee fly

(Encyclopedia)bee fly, name for the small- to medium-sized flies of the family Bombyliidae, many of which resemble bees in appearance and behavior. This mimicry provides bee flies with some measure of protection ag...

sandpiper

(Encyclopedia)sandpiper, common name for some members of the large family Scolopacidae, small shore birds, including the snipe and the curlew. Sandpipers are wading birds with relatively long legs and long, slender...

caviar

(Encyclopedia)caviar or caviare kăvˈēär [key], the roe (eggs) of various species of sturgeon prepared as a piquant table delicacy. The ovaries of the fish are beaten to loosen the eggs, which are then freed fro...

Cayuse

(Encyclopedia)Cayuse kīyo͞osˈ [key], Native North Americans who formerly occupied parts of NE Oregon and SE Washington. They were closely associated with the Nez Percé and spoke a language belonging to the Saha...

pine nut

(Encyclopedia)pine nut or piñon pĭnˈyən, pēˈnyōn [key], edible seed of various species of pine trees. Among the North American species that bear such edible seeds are the nut pines or piñons, Pinus edulis a...

racer

(Encyclopedia)racer, name for several related swift, slender snakes, especially those of the genus Coluber. All of the racers are nonpoisonous, nonconstricting, day-active snakes. The black racer, C. constrictor, i...

Ribera, Jusepe

(Encyclopedia)Ribera, Jusepe, José, or Giuseppe ho͞osāˈpā rēbāˈrä, hōsāˈ, jo͞ozĕpˈpā [key], c.1590–1652, Spanish baroque painter. He studied in Valencia and Rome but at an early age settled in Nap...