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terbreed, as races; to mix distinct breeds. If two individuals of distinct races cross, a third is invariably produced different from either. Coleridge.

The vertex or top of an arch; -- applied generally to about one third of the curve, but in a pointed arch to the apex only.

To raise to the third power; to obtain the cube of.

A curve of the third degree. Circular cubic. See under Circular.

oduct again by the same number. See Cube. -- Cubical parabola (Geom.), two curves of the third degree, one plane, and one on space of three dimensions.

One of the three tarsal bones supporting the first, second third metatarsals. They are usually designated as external, middle, and internal, or ectocuniform, mesocuniform, and entocuniform, respectively.

A certain surface of the third degree, described by a moving straight line; -- used to illustrate the motions of a rigid body and also the forces acting on the body.

ne language from another. Johnson. This process, by which from two statements we deduce a third, is called deduction. J. R. Seely.

ng the proximity of blood; one remove in the chain of relationship; as, a relation in the third or fourth degree. In the 11th century an opinion began to gain ground in Italy, that third cousins might marry, being in the seventh degree according to the civil law. Hallam.

A kind of novation by which a debtor, to be liberated from his creditor, gives him a third person, who becomes obliged in his stead to the creditor, or to the person appointed by him. Pothier.

the hands, etc. Let one attend him with a silver basin, . . . Another bear the ewer, the third a diaper. Shak.

express the quantity of an eclipse; as, an eclipse of eight digits is one which hides two thirds of the diameter of the disk.

The Greek major third, which comprehend two major tones (the modern major third contains one major and one minor whole tone).

s founded by St. Dominic, and chiefly employed in teaching. -- Dominican tertiaries (the third order of St. Dominic). See Tertiary.

lling against the next object, causes it in turn to fall, and that second object causes a third to fall, etc.; the process can be repeated an indefinite number of times. Derived from an entertainment using dominoes arranged in a row, each standing on edge and therefore easily knocked over; when the first is made to fal…

he proportion or ratio of squares. Thus, in geometrical proportion, the first term to the third is said to be in a duplicate ratio of the first to the second, or as its square is to the square of the second. Thus, in 2, 4, 8, 16, the ratio of 2 to 8 is a duplicate of that of 2 to 4, or as the square of 2 is to the squa…

E is the third tone of the model diatonic scale. E (E flat) is a tone which is intermediate between D and E.

enharmonic) recognized by the ancient Greeks, which consisted of quarter tones and major thirds, and was regarded as the most accurate.

rd which can be resolved into several distinct keys; one whose intervals, being all minor thirds, do not clearly indicate its fundamental tone or root; the chord of the diminished triad, and the diminished seventh.

A deed, bond, or other written engagement, delivered to a third person, to be held by him till some act is done or some condition is performed, and then to be by him delivered to the grantee. Blackstone.