Definition of EXPANSION

something added (as by growth) <the museum's new wing is only the first in a series of expansions planned for the next decade>
Near Antonyms deduction, subtraction
the act or process of going from the simple or basic to the complex or advanced <the expansion of remedial reading classes into a district-wide program using school volunteers for a variety of needs>
a wide space or area <we gazed in awe at the star-strewn expansion of nighttime sky above us>

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