Meiosis

Diminution; a species of hyperbole, representing a thing as being less than it really is.

The type of cell division that reduces the chromosome number by half, producing gametes

(genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)

understatement for rhetorical effect (especially when expressing an affirmative by negating its contrary); "saying ‘I was not a little upset’ when you mean ‘I was very upset’ is an example of litotes"