We found one dictionary that defines the word originatrix:

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1. originatrix: Wiktionary

Definitions from Wiktionary (originatrix) ▸ noun:  A female originator. ▸ Words similar to originatrix ▸ Usage examples for originatrix ▸ Idioms related to originatrix ▸ Wikipedia articles (New!) ▸ Popular adjectives describing originatrix ▸ Words that often appear near originatrix ▸ Rhymes of originatrix ▸ Invented words related to originatrix