To change (something) from a smaller form and/or size to a larger one; to spread out or lay open.
To increase the extent, number, volume or scope of (something).
To express (something) at length and/or in detail.
To rewrite (an expression) as a longer, yet equivalent sum of terms.
To multiply both the numerator and the denominator of a fraction by the same natural number yielding a fraction of equal value
To (be) change(d) from a smaller form/size to a larger one.
To (be) increase(d) in extent, number, volume or scope.
To speak or write at length or in detail.
To feel generous or optimistic.
To set out the meaning of; to explain or discuss at length
To make a statement, especially at length.