placenta /pləˈsɛntə/ noun plural placentas
plural placentas
Learner's definition of PLACENTA
[count] medical
: the organ in mammals that forms inside the mother's uterus, nourishes the unborn baby, and is pushed out of the mother after the birth of the baby胎盘
— placental
/pləˈsɛntl̟/ adjective, always used before a noun