Category:Triple

Tri"ple, a. Etym: [l. triplus; tri- (see tri-) + -plus, as in duplus Double: cf. F. triple. See double, and cf. Treble.]

1. Consisting of three united; multiplied by three; threefold; as, a Triple knot; a triple tie. By thy triple shape as thou art seen. Dryden.

2. Three times repeated; treble. See treble.

3. One of three; third. [obs.] Shak. Triple crown, the crown, or Tiara, of the pope. See tiara, 2. -- triple-expansion steam engine, a compound steam engine in which The same steam performs work in three cylinders successively. -- triple measure (mus.), a measure of tree beats of which first Only is accented. -- triple ratio (math.), a ratio which is equal to 3. -- triple salt (chem.), a salt containing three distinct basic atoms As radicals; thus, microcosmic salt is a triple salt. -- triple star (astron.), a system of three stars in close Proximity. -- triple time (mus.), that time in which each measure is divided Into three equal parts. -- triple valve, in an automatic air brake for railroad cars, the Valve under each car, by means of which the brake is controlled by a Change of pressure in the air pipe leading from the locomotive.

Triple Tri"ple, v. i. [imp. & p. p. Tripled; p. pr. & vb. n. Tripling.] Etym: [cf. F. tripler. See triple, a.]

Defn: to make threefold, or thrice as much or as many; to treble; as, To triple the tax on coffee.