noun, noun or participle which takes 'suru', transitive verb, intransitive verb
halving; reduction by half
Used for cutting something in half or reducing it to half its original amount, size, or number. Can be used both transitively and intransitively.
予算が半減した。
The budget was cut in half.
この薬は副作用を半減させる。
This medicine reduces side effects by half.