Decidua definition

dĭ-sĭjo͝o-ə
A mucous membrane lining the uterus, modified during pregnancy and shed at parturition or during menstruation.
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A mucous membrane lining the uterus during pregnancy, cast off at childbirth.
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(anatomy) A mucous membrane that lines the uterus and is shed during menstruation and modified during pregnancy.
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A mucous membrane lining the uterus, modified during pregnancy and shed at parturition or during menstruation.
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Other Word Forms

Noun

Singular:
decidua
Plural:
deciduae

Origin of decidua

  • New Latin (membrāna) dēcidua (membrane) that falls off from Latin dēciduus falling off deciduous

    From American Heritage Dictionary of the English Language, 5th Edition