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expansion
noun
- an expanding or being expanded; enlargement; dilation
- an expanded thing or part
- the amount, degree, or extent of expansion
- a development or full treatment, as of a topic
- the process or result of working out or giving the full form of a contraction, equation, etc.
- Mech. the expanding in volume of steam in the cylinder of a steam engine after cutoff, or of gas in the cylinder of an internal-combustion engine after explosion
See expansion in American Heritage Dictionary 4
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