Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Latin
Origin: 'flat cake', from Greek, from plax 'flat surface'

placenta

 noun
     
Related topics: Human
pla‧cen‧ta [countable]
HBH an organ that forms inside a woman's uterus to feed an unborn baby
—placental adjective [only before noun]
placental blood
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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