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A process (invented about 1899 by Frederick W. Taylor and Maunsel B. White) for giving toughness to self-hardening steels. The steel is heated almost to fusion, cooled to a temperature of from 700º to 850º C. in molten lead, further cooled in oil, reheated to between 370º and 670º C., and cooled in air.…

An annelid larva having telotrochal bands of cilia.

Having both a preoral and a posterior band of cilla; -- applied to the larvæ of certain annelids.

Same as Basic process, above.

A process of electric welding in which heat is developed by a large current passing through the metal.

A gull. [Prov. Eng.]

ound, in which the shaft is lined with tubbing and provided with an air lock, work being proceeded with under air pressure.

Gun cotton; -- so called because regarded as containing three nitro groups.

Same as Rock tripe, under Rock.

used for exploring tissues or for inserting drainage tubes, as in dropsy. [Written also trochar.]

A line of fortifications, usually rough, constructed to prevent the passage of an enemy across a region. [Sp. Amer.]

A trochaic verse or measure. Dryden.

Of or pertaining to trochees; consisting of trochees; as, trochaic measure or verse.

Resembling a wheel. Trochal disk (Zoöl.), the cephalic disk of a rotifer. It is usually surrounded by a fringe of cilia.

One of two processes near the head of the femur, the outer being called the great trochanter, and the inner the small trochanter.

Of or pertaining to one or both of the trochanters.

The second joint of the leg of an insect, -- often united with the coxa.

See Trocar.

A medicinal tablet or lozenge; strictly, one of circular form.

A foot of two syllables, the first long and the second short, as in the Latin word ante, or the first accented and the second unaccented, as in the English word motion; a choreus.