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English definition of “placenta”

placenta

noun [C]     /pləˈsen.tə/ US  /-t̬ə/ (plural placentas or placentae   /-tiː/   ) specialized
the temporary organ that feeds a foetus (= developing baby ) inside its mother's womb Sexual and reproductive organs
(Definition of placenta noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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