肛門[koumon] anus
脱肛[dakkou] anal prolapse
肛門学[koumongaku] proctology
肛門科[koumonka] proctology clinic
肛門出血[koumonshukketsu] anal bleeding

肛門上皮[koumonjouhi] anal epithelium
肛門期[koumonki] anal stage
内肛動物[naikoudoubutsu] entoproct (any animal of phylum Entoprocta)
外肛動物[gaikoudoubutsu] Bryozoa animal
肛門性交[koumonseikou] anal intercourse

引裂く[hikisaku] to tear up
核分裂[kakubunretsu] nuclear fission
裂く[saku] to tear
乾裂[kanretsu] cracks in drying lumber
き裂[kiretsu] crack

決裂[ketsuretsu] breakdown
四分五裂[shibungoretsu] torn asunder
支離滅裂[shirimetsuretsu] incoherent
精神分裂症[seishinbunretsushou] schizophrenia
切り細裂く[kirikomazaku] to cut up small