The act or process of expanding. Example: The expansion of metals and plastics in response to heat is well understood.
The fractional change in unit length per unit length per unit temperature change.
A new addition. Example: My new office is in the expansion behind the main building.
A product to be used with a previous product. Example: This expansion requires the original game board.
That which is expanded; expanse; extended surface.
(steam engines) 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.
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