01 a. Consisting of three united; multiplied by three; threefold; as, a triple knot; a triple tie.
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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.
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2.
Three times repeated; treble. See Treble. See: Treble
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3.
One of three; third.[Obs.]
Phrases & compounds
Triple-expansion steam engine —
a compound steam engine in which the same steam performs work in three cylinders successively.
Triple measure —
a measure of tree beats of which first only is accented.
Triple ratio —
a ratio which is equal to 3.
Triple salt —
a salt containing three distinct basic atoms as radicals; thus, microcosmic salt is a triple salt.
Triple star —
a system of three stars in close proximity.
Triple time —
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.