Found 2 items, similar to progenitor.
English → English (WordNet)
Definition: progenitor
progenitor
n : an ancestor in the direct line [syn:
primogenitor]
English → English (gcide)
Definition: Progenitor
Progenitor
\Pro*gen"i*tor\, n. [OF. progeniteur, L. progenitor,
fr. progignere, progenitum, to bring forth, to beget; pro
forth + gignere to beget. See
Gender kind.]
An ancestor in the direct line; a forefather.
[1913 Webster]
And reverence thee their great progenitor. --Milton.
[1913 Webster]