the act of decreasing or reducing something何かを小さく、あるいは少なくする行為縮減
any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent電子が原子やイオンに加えられるとき(例えば酸素を取り除き水素を加える事によって)の過程還元