decidua noun. [dɪ'sɪdjʊǝ] L18.
[mod. Latin decidua (sc. membrana), use as noun of fem. sing. of Latin deciduus DECIDUOUS: so called as being discarded at parturition.]
Anatomy. The thick layer of modified endometrium which lines the uterus during pregnancy in certain mammals, including humans.

■ decidual adjective of or pertaining to the decidua M19.

■ deciduate adjective possessing a decidua; of the nature of a decidua: M19.

[TahlilGaran] English Dictionary ▲