deciduate

[ dih-sij-oo-it ]

/ dɪˈsɪdʒ u ɪt /

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adjective Anatomy, Zoology.

having or characterized by a decidua.

(of a placenta) partly formed from the decidua.

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Origin of deciduate

1865–70; <New Latin dēciduātus, equivalent to dēciduadecidua + Latin -ātus-ate¹

The surface of the chorion is covered evenly with minute villi, constituting a diffuse non-deciduate placenta.
Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6|Various
A zonary deciduate placenta indicates an increase both in area and in complexity.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
The members of this group have a deciduate and zonary placenta.
The Cambridge Natural History, Vol X., Mammalia|Frank Evers Beddard
The mammae are thoracic; the placenta discoidal and deciduate.
The Cambridge Natural History, Vol X., Mammalia|Frank Evers Beddard

Placenta deciduate and dome-like, composed of an aggregation of numerous discoidal lobes.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10|Various