English explanatory dictionary online >> Expansion

Results for: Expansion



ex·pan·sion  (k-spnshn)
a. The act or process of expanding: the new nations expansion westward.
b. The state of being expanded.
a. An expanded part: an expansion of a river.
b. A product of expanding: a book that is an expansion of the authors Ph.D. thesis.
3. The extent or amount by which something has expanded.
4. Mathematics
a. A quantity written in an extended form, such as in a sum or product of terms.
b. The process of obtaining this form.
5. An expanse.
6. A period of increased economic or business activity.

expansion [ɪkˈspænʃən]
1. the act of expanding or the state of being expanded
2. something expanded; an expanded surface or part
3. the degree, extent, or amount by which something expands
4. an increase, enlargement, or development, esp in the activities of a company
5. (Mathematics) Maths
a.  the form of an expression or function when it is written as the sum or product of its terms
b.  the act or process of determining this expanded form
6. (Engineering / Mechanical Engineering) the part of an engine cycle in which the working fluid does useful work by increasing in volume
7. (Engineering / Mechanical Engineering) the increase in the dimensions of a body or substance when subjected to an increase in temperature, internal pressure, etc.
expansionary  adj

expansion  (k-spnshn)
1. An increase in the volume of a substance while its mass remains the same. Expansion is usually due to heating. When substances are heated, the molecular bonds between their particles are weakened, and the particles move faster, causing the substance to expand.
2. A number or other mathematical expression written in an extended form. For example, a2 + 2ab + b2 is the expansion of (a + b)2.

expansion  /kspnn/  n. [C;U] an en-largement, increase: The company is hiring more people and is going through an expansion. -adj. expansionary; expansionist. Expansion

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