expansion

/ɪkˈspænʃən/ nom B2

En français : expansion

An act, process, or instance of expanding. (countable, uncountable) · 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. (countable, uncountable) · Look up the expansion of 1018 steel at stick welding temps and figure out how far this thing's gonna bend once we weld it up.
A new addition. (countable, uncountable) · My new office is in the expansion behind the main building.
A product to be used with a previous product. (countable, uncountable) · This expansion requires the original game board.
That which is expanded; expanse; extended surface. (countable, uncountable)
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. (countable, uncountable)
The replacement of a short name (e.g., acronym, initialism, alphanumeric symbol, abbreviation) with the longer name that is synonymous with it, as when spelling out acronyms to ensure clarity for a general audience. (countable, uncountable) · Expansion of acronyms is often helpful for nonexpert readers (anacronyms excluded).
The string of text thus substituted. (countable, uncountable)

Pluriel expansions

Dans la bibliothèque

Matthew did not know that Samuel, in the recent expansion of his business, had set up a lady clerk also; she was a niece of his wife’s and a very dashing young person indeed, with a huge, drooping pompadour, big, rolling brown eyes, and a most extensive and bewildering smile.

Anne of Green Gables, p. 189 · C1

For decades, the red fox has been a familiar resident of the British countryside, but its expansion into urban landscapes is a relatively recent phenomenon.

Urban Foxes: Thriving in the Concrete Jungle, p. 1 · C1

Facing a severe domestic labor shortage during a period of rapid economic expansion, the Australian government actively recruited workers from overseas.

The Snowy Mountains Scheme, p. 1 · C1

The over-engineered capacity of his original design was so remarkably prescient that it accommodated the city's massive demographic expansion for well over a century.

The Great Stink and the Engineering of a Modern Metropolis, p. 1 · C2

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