Orismology \O`ris*mol"o*gy\ ([=o]`r[i^]s*m[o^]l"[-o]*j[y^]), n.
[Gr. "orismo`s a marking out by boundaries, the definition of
a word + -logy. See {Horizon}.]
That department of natural history which treats of technical
terms; the science of defining technical terms.
[1913 Webster]