meiosis(n = noun.process)miosis, reduction division - (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);
meiosis(n = noun.communication)litotes - 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"
Diminution; a species of hyperbole, representing a thing as being less than it really is; understatement; see also litotes. [1913 Webster]
The cellular process by which a diploid progenitor cell forms haploid gametes, including a division of one diploid cell into two cells, each with one of the homologous sets of chromosomes. [PJC]