source: Division and Remainders

1. a part of something that is left over when other parts have been completed, used, or dealt with:

〖the ～; 集合的に; 単複両扱い〗 残り(物), 残りの人, 残り時間(rest)

e.g. leave a few mushrooms for garnish and slice the remainder

e.g. the remainder of the year.

Mathematics the number which is left over in a division in which one quantity does not exactly divide another:

〖通例the ～〗 〘数〙 (割り算の)余り, 剰余; (引き算の)残り, 差

e.g. 23 divided by 3 is 7, remainder 2.

a copy of a book left unsold when demand has fallen.

廉価本, 在庫処分の本

2. Law an interest in an estate that becomes effective in possession only when a prior interest (devised at the same time) ends.

〘法〙 残余権

dispose of (a book left unsold) at a reduced price:

(在庫処分で)〈本〉を安売りする (!しばしば受け身で)

e.g. titles are being remaindered increasingly quickly to save on overheads.

late Middle English (in remainder (sense 2 of the noun) ): from Anglo-Norman French, from Latin remanere (see remain).