TEMPERING n.
and steel; especially, the process of giving to steel the degree of hardness required for various purposes, consisting usually in first plunging the article, when heated to redness, in cold water or other liquid, to give an excess of hardness, and then reheating it gradually until the hardness is reduced or drawn down…
TESTING n.
n of the strength of materials, as iron, stone, etc., and their behavior under strains of various kinds, as elongation, bending, crushing, etc.
THROWING STICK n.
An instrument used by various savage races for throwing a spear; -- called also throw stick and spear thrower. One end of the stick receives the butt of the spear, as upon a hook or thong, and the other end is grasped with the hand, which also holds the spear, toward the middle, above it with the finger and thumb, the…
TIN n.
mmercial tin, cast into blocks, and partially refined, but containing small quantities of various impurities, as copper, lead, iron, arsenic, etc.; solid tin as distinguished from tin plate; -- called also bar tin. -- Butter of tin. (Old Chem.) See Fuming liquor of Libavius, under Fuming. -- Grain tin. (Metal.) See u…
TOBACCO n.
the plant prepared for smoking, chewing, etc., by being dried, cured, and manufactured in various ways. Tobacco box (Zoöl.), the common American skate. -- Tobacco camphor. (Chem.) See Nicotianine. -- Tobacco man, a tobacconist. [R.] -- Tobacco pipe. (a) A pipe used for smoking, made of baked clay, wood, or other mate…