I think that Buz saw the word "theory" used in one of the definitions and so assumed that it might also apply to science.
Here is the definitions in Buz's link in full:
quote:
ontology (n-tl-j)
n.
The branch of metaphysics that deals with the nature of being.
ontologist n.
The American Heritage Dictionary of the English Language, Fourth Edition copyright 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
ontology [ɒnˈtɒlədʒɪ]
n
1. (Philosophy) Philosophy the branch of metaphysics that deals with the nature of being
2. (Philosophy / Logic) Logic the set of entities presupposed by a theory
ontological adj
ontologically adv
Collins English Dictionary — Complete and Unabridged HarperCollins Publishers 1991, 1994, 1998, 2000, 2003
ontology
philosophical inquiry into the nature of being itself, a branch of metaphysics. ontologist, n. ontologie, ontological, ontologistic, adj.
See also: Philosophy
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ontology, phenomenology - Ontology is the branch of metaphysics concerned with the nature or essence of being or existence, the opposite of phenomenology, the science of phenomena.
The problem might be that Buzsaw simply does not know how to read a dictionary, he might not understand that in each case the definitions are qualified to show that they refer only to philosophy and metaphysics.
Anyone so limited that they can only spell a word one way is severely handicapped!