Yours, Etc.: Origins and Uses of 8 Sign-Offs
1620s, from Latin nascentem (nominative nascens) "arising young, immature," present participle of nasci "to be born" (Old Latin gnasci; see genus). Related: Nascence (1560s); nascency.
nascent nas·cent (nās'ənt, nā'sənt)adj.
Coming into existence; emerging.
Of or relating to the state of a chemical element at the moment it is set free from one of its compounds.