Source : Webster's Revised Unabridged Dictionary (1913)

Natalitial \Na`ta*li"tial\, Natalitious \Na`ta*li"tious\, a. [L.
   natalitius, from natalis. See {Natal}.]
   Of or pertaining to one's birth or birthday, or one's
   nativity. [Obs.] ``Natalitial poplar.'' --Evelyn.
   ``Natalitious fire.'' --W. Cartwright.