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Expansion vs Expansivity - What's the difference?

expansion | expansivity |

As nouns the difference between expansion and expansivity

is that expansion is expansion while expansivity is expansiveness.

expansion

English

Noun

  • The act or process of expanding.
    • 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.
    • My new office is in the expansion behind the main building.
  • A product to be used with a previous product.
    • This expansion requires the original game board.
  • That which is expanded; expanse; extended surface.
  • * Beattie
    • the starred expansion of the skies
  • (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.

    • Antonyms

    * (act of expanding) contraction

    Related terms

    * expand * expanse * expansive

    Derived terms

    * expansionism * expansion joint * expansion team * expansion cleat * expansion pack

    expansivity

    English

    Noun

    (-)
  • expansiveness
  • (mathematics) The formal notion of points moving away from one another under the action of an iterated function.