verb To change (something) from a smaller form or size to a larger one; to spread out or lay open.
You can expand this compact umbrella to cover a large table.
verb To increase the extent, number, volume or scope of (something).
A flower expands its leaves.
verb To express (something) at length and/or in detail.
verb To rewrite (an expression) or be rewritten as a more verbose, but equivalent, form: To rewrite (an expression) as a longer, yet equivalent, sum of terms.
Use the binomial theorem to expand (x+1)4.
verb To rewrite (an expression) as a longer, yet equivalent, sum of terms.
Use the binomial theorem to expand (x+1)4.
verb To become, by rewriting, a longer, yet equivalent, sum of terms.
The expression (x+1)4 expands to x4+4x3+6x2+4x+1.
verb To multiply both the numerator and the denominator of a fraction by the same (non-zero) number (which yields a fraction of equal value).
Expanding 4/7 by 3 gives 12/21.
verb To change or grow from smaller to larger in form, number, or size.