remainer

noun

(UK politics) Someone who supports the United Kingdom remaining within the European Union.

noun

One who remains.

1. A part or parts remaining after some has/have been removed.

   My son ate part of his cake and I ate the remainder.

2. The amount left over after subtracting the divisor as many times as possible from the dividend without producing a negative result. If (n) (dividend) and d (divisor) are integers, then (n) can always be expressed in the form n = dq + r, where q (quotient) and r (remainder) are also integers and 0 ≤ r < d.

   11 divided by 2 is 5 remainder 1.

3. The number left over after a simple subtraction

   10 minus 4 leaves a remainder of 6

4. Excess stock items left unsold and subject to reduction in price.

   I got a really good price on this shirt because it was a remainder.

5. An estate in expectancy which only comes in its heir's possession after an estate created by the same instrument has been determined