Triple-expansion steam engine
Triple Tri"ple, a. [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. [1913 Webster]

By thy triple shape as thou art seen. --Dryden. [1913 Webster]

2. Three times repeated; treble. See {Treble}. [1913 Webster]

3. One of three; third. [Obs.] --Shak. [1913 Webster]

{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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Steam engine — A steam engine is a heat engine that performs mechanical work using steam as its working fluid. [ [http://www.britannica.com/EBchecked/topic/564472/steam engine steam engine Britannica Online Encyclopedia ] ] Steam engines have a long history,… …   Wikipedia

  • Steam engine — Steam en gine ([e^]n j[i^]n). An engine moved by steam. [1913 Webster] Note: In its most common forms its essential parts are a piston, a cylinder, and a valve gear. The piston works in the cylinder, to which steam is admitted by the action of… …   The Collaborative International Dictionary of English

  • triple-expansion — /trɪpəl əkˈspænʃən/ (say tripuhl uhk spanshuhn) adjective denoting or relating to a steam engine in which the steam is expanded in three cylinders in succession, the exhaust steam from the first cylinder being the driving steam for the second,… …   Australian English dictionary

  • triple-expansion — /trip euhl ik span sheuhn/, adj. noting a power source, esp. a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders. * * * …   Universalium

  • triple-expansion — tri′ple expan′sion adj. mac noting a power source, esp. a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders • Etymology: 1880–85 …   From formal English to slang

  • triple-expansion — /trip euhl ik span sheuhn/, adj. noting a power source, esp. a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders …   Useful english dictionary

  • Back-acting steam engine — Steam engine Steam en gine ([e^]n j[i^]n). An engine moved by steam. [1913 Webster] Note: In its most common forms its essential parts are a piston, a cylinder, and a valve gear. The piston works in the cylinder, to which steam is admitted by the …   The Collaborative International Dictionary of English

  • Back-action steam engine — Steam engine Steam en gine ([e^]n j[i^]n). An engine moved by steam. [1913 Webster] Note: In its most common forms its essential parts are a piston, a cylinder, and a valve gear. The piston works in the cylinder, to which steam is admitted by the …   The Collaborative International Dictionary of English

  • Marine steam engine — Period cut away diagram of a triple expansion steam engine installation, circa 1918 A marine steam engine is a reciprocating steam engine that is used to power a ship or boat. Steam turbines and diesel engines largely replaced reciprocating steam …   Wikipedia

  • Portable steam engine — Steam engine Steam en gine ([e^]n j[i^]n). An engine moved by steam. [1913 Webster] Note: In its most common forms its essential parts are a piston, a cylinder, and a valve gear. The piston works in the cylinder, to which steam is admitted by the …   The Collaborative International Dictionary of English

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