Progenitrix is a related term of genitrix.
As a noun genitrix is
the biological mother of a child.
progenitrix
Not English
Progenitrix has no English definition. It may be misspelled.
genitrix
English
Noun
(genitrices)
The biological mother of a child
Synonyms
* birthmother
Coordinate terms
* genitor
Related terms
* progenitrix
References
* Kinship term glossary [http://www.mnsu.edu/emuseum/cultural/kinship/terms.html]