Cleavage

亀裂

kiretsu

(the act of cleaving or the state of being cleft)

分割

bunkatsu

(the act of cleaving or the state of being cleft)

切開

sekkai

(the act of cleaving or the state of being cleft)

劈開

hekikai

(the act of cleaving or the state of being cleft)

劈開

hekikai

(mineralogy: tendency of a crystal to split)

卵割

rankatsu

(biology: cell division)

胸の谷間

mune no tanima

(separation between breasts)

谷間

tanima

(separation between breasts)

開裂

kairetsu

(chemistry: splitting of a large molecule)