Definition of amnion

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  • amnion is a valid Scrabble US word with a point value of 8
  • amnion is a valid Scrabble UK word with a point value of 8
  • amnion is a valid Words with friends word with a point value of 11

Definition of amnion

  • thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) (noun)

    Synonyms

    1. amnios
    2. amniotic sac

See definition of amnion in Merriam Webster