from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. First of all, first born, primary, original.
from the GNU version of the Collaborative International Dictionary of English
- adj. First born, or first of all; original; primary. See primogenial.
from The Century Dictionary and Cyclopedia
- First-born; original; primary. Also primogenial.
- Specifically applied to several animals of a primitive or early type after their kind, or to such a primitive type: as, the primigenial elephant (Elephas primigenius).
From latin adjective "primus" (first) and "genio" (from "generare", to create) + suffix -al (Wiktionary)