The Collaborative International Dictionary
Natalitial
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.
Wiktionary
natalitial
a. (context rare English) Pertaining to a birthday.