Definition of mitosis in US English:


nounPlural mitoses

  • A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

    Compare with meiosis
    • ‘Centromeres are essential for the proper segregation of chromosomes at mitosis and meiosis.’
    • ‘It is generally assumed that DNA chains are randomly segregated to daughter cells during mitosis.’
    • ‘The centromere is responsible for two key chromosomal functions in mitosis and meiosis.’
    • ‘Regions of the germline with cells in mitosis or different stages of meiotic prophase are indicated.’
    • ‘Counting cells at mitosis or interphase is universally applicable.’


Late 19th century: modern Latin, from Greek mitos ‘thread’.