1. noun
a) A part or parts remaining after some has/have been removed.
My son ate part of his cake and I ate the remainder.
b) The amount left over after subtracting the divisor as many times as possible from the dividend without producing a negative result. If (dividend) and d (divisor) are integers, then can always be expressed in the form n = dq + r, where q (quotient) and r (remainder) are also integers and 0 ≤ r < d.
You can have the remainder of my clothes.
2. adjective
3. verb
The bookstore remaindered the unsold copies of that book at the end of summer at a reduced price.
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