misdivision

From mis- +‎ division.

misdivision (countable and uncountable, plural misdivisions)

1. Incorrect division, e.g. of a word.
2. (cytology) Abnormal (i.e. transverse instead of longitudinal) division of a centromere during meiosis or mitosis, resulting in two telocentric chromosomes from a single metacentric chromosome.

• divisionism