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Expansion   /ɪkspˈænʃən/  /ɪkspˈæntʃən/   Listen
noun
Expansion  n.  
1.
The act of expanding or spreading out; the condition of being expanded; dilation; enlargement.
2.
That which is expanded; expanse; extend surface; as, the expansion of a sheet or of a lake; the expansion was formed of metal. "The starred expansion of the skies."
3.
Space through which anything is expanded; also, pure space. "Lost in expansion, void and infinite."
4.
(Economics & Commmerce) An increase in the production of goods and services over time, and in the volume of business transactions, generally associated with an increase in employment and an increase in the money supply. Opposite of contraction.
Synonyms: economic expansion.
5.
(Math.) The developed result of an indicated operation; as, the expansion of (a + b)^(2) is a^(2) + 2ab + b^(2).
6.
(Steam Engine) The operation of steam in a cylinder after its communication with the boiler has been cut off, by which it continues to exert pressure upon the moving piston.
7.
(Nav. Arch.) The enlargement of the ship mathematically from a model or drawing to the full or building size, in the process of construction. Note: Expansion is also used adjectively, as in expansion joint, expansion gear, etc.
8.
An enlarged or extended version of something, such as a writing or discourse; as, the journal article is an expansion of the lecture she gave.
9.
An expansion joint. See below. (Colloq. or jargon)
Expansion curve, a curve the coördinates of which show the relation between the pressure and volume of expanding gas or vapor; esp. (Steam engine), that part of an indicator diagram which shows the declining pressure of the steam as it expands in the cylinder.
Expansion gear (Steam Engine). a cut-off gear.
Automatic expansion gear or Automatic cut-off, one that is regulated by the governor, and varies the supply of steam to the engine with the demand for power.
Fixed expansion gear, or Fixed cut-off, one that always operates at the same fixed point of the stroke.
Expansion joint, or Expansion coupling (Mech. & Engin.), a yielding joint or coupling for so uniting parts of a machine or structure that expansion, as by heat, is prevented from causing injurious strains; as:
(a)
A slide or set of rollers, at the end of bridge truss, to support it but allow end play.
(b)
A telescopic joint in a steam pipe, to permit one part of the pipe to slide within the other.
(c)
A clamp for holding a locomotive frame to the boiler while allowing lengthwise motion.
(d)
a strip of compressible material placed at intervals between blocks of poured concrete, as in roads or sidewalks.
Expansion valve (Steam Engine), a cut-off valve, to shut off steam from the cylinder before the end of each stroke.





Collaborative International Dictionary of English 0.48


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"Expansion" Quotes from Famous Books



... where the currency is purely metallic, and the cost of every thing is REDUCED to a hard money standard, a piece of broadcloth can be manufactured for fifty dollars; the manufacture of which in our country, from the expansion of paper currency, would cost one hundred dollars. What is the consequence? The foreign French and German manufacturer imports this cloth into our country, and sells it for a hundred. Does not every person perceive that the redundancy of our currency is equal ...
— Americanism Contrasted with Foreignism, Romanism, and Bogus Democracy in the Light of Reason, History, and Scripture; • William Gannaway Brownlow
... of his poems, "The Deserted Garden"—a veritable gallery of imaginative landscape—is entirely Mexican in colouring. Indeed we may conjecture without too much rashness that it is a mere expansion of the sonnet entitled "Tezcotzinco", the fruit of a solitary excursion to the ruins of Nezahualcoyotl's baths, in the hills beyond Tezcoco. But even where there is no painting of definite Mexican scenes, motives ...
— Poems • Alan Seeger
... of breathing, it is found that the number may be reduced to two; of these the others are but slight modifications. In one system of inspiration the abdomen is protruded, while the upper chest is held firm, the greatest expansion being at the base of the lungs. In the other mode of taking breath the abdomen is slightly drawn in, while the chest is expanded in every direction, upward, laterally, forward, and backward. In this system the upper chest is held in ...
— The Psychology of Singing - A Rational Method of Voice Culture Based on a Scientific Analysis of All Systems, Ancient and Modern • David C. Taylor
... life, will be found in the following pages first undertaken systematically and in logical sequence; and what I have since written on the political influence of the Arts has been little more than the expansion of these first lectures, in the reprint of which not a ...
— A Joy For Ever - (And Its Price in the Market) • John Ruskin
... conflict between two opposite principles, Light and Darkness, Compression and Expansion, will be found to underlie all the ancient religions of the world, and it is conspicuous throughout our own Scriptures. But it should be borne in mind that the oppositeness of their nature does not necessarily ...
— The Law and the Word • Thomas Troward


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