The Collaborative International Dictionary
Ontologist \On*tol"o*gist\, n. [Cf. F. ontologiste.]
One who is versed in or treats of ontology.
--Edin. Rev.
Wiktionary
n. (context philosophy English) A scholar or theorist of ontology, or an adherent of a particular ontological doctrine.
Usage examples of "ontologist".
A couple of hours later the ontologist bid a cynical good-morning to his receptionist and secretaries and stepped into his private office.
Puzzled, the ontologist gnawed his lower lip and stared at the message in the scriptor.
The resulting reality would probably be unrecognizable even to a professional ontologist, let alone the mass of humanity.
Finally she turned and looked into the eyes of the ontologist for the first time since the beginning of the conference.
The ontologist relaxed again, and began floating through a dreamy patch of light and darkness.
For one thing, as both existentialist and Marxist, ontologist and political theorist, Sartre puts doing in the foreground for us.