noun, noun or participle which takes 'suru', transitive verb
dividing into two halves
Archaic term for splitting something into two equal parts. In modern Japanese, 半分にする or 二等分する are used instead.
古文書には、領地を中分すると記されている。
The old document states that the territory is to be divided into two halves.
Compound of 中 (middle) and 分 (part, divide). The exact historical derivation is uncertain, but it follows a common pattern for division terms.