Definition of progenitrix in US English:

progenitrix

noun

  • A female ancestor or parent.

Origin

Late 15th century; earliest use found in John Skelton (c1460–1529), poet. From post-classical Latin progenitrix ancestress (recorded in an 8th-cent. epitome of a 2nd-cent. grammarian; also 636 in Isidore), feminine form corresponding to classical Latin prōgenitor; compare -trix.

Pronunciation

progenitrix

/prə(ʊ)ˈdʒɛnɪtrɪks/