不ふ等とう割かつMeanings1noununequal cleavagebiologyBiology term for asymmetric cell division in early embryos. Compare with 等割 (equal cleavage).See also: 等割不ふ等とう割かつは、胚はい発はっ生せいの初しょ期きに見みられる細さい胞ぼう分ぶん裂れつの一いち形けい態たいである。Unequal cleavage is a form of cell division observed in early embryonic development.