"ˌ noun
: the failure of homologous chromosomes to break apart into separate sets in the reduction division of meiosis with the result that some gametes have the diploid number of chromosomes
"ˌ noun
: the failure of homologous chromosomes to break apart into separate sets in the reduction division of meiosis with the result that some gametes have the diploid number of chromosomes
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012