ETYMOLOGY
from Latin morientem, present participle of mori (to die), cognate with mors (death) and mortuus (dead)
EXAMPLE
“… we see him (saith he) in our Day, by Luther, Calvin, Perkins, &c. who unmask’d him; and he adds a 6th Period, to wit, Morient, saying, If we do not, yet our Posterity shall see him die, for God saith, that his day is coming, …”
From: A Distinct Discourse and Discovery of the Person and Period of Antichrist
By Christopher Ness, 1679
Lexicophilia 