rare1. [erron. f. Gr. θέρ-ειν to heat, in Nicander to foment or apply a fomentation to (a wound), hence θέρων is glossed by a scholiast by ἰώμενος healing, curing: see -OLOGY.] The healing art. (See quot.)
1841. R. Park, Pantology, XII. iii. (1847), 418. In the branch of Thereology, we include the study of diseases, and the practice of Medicine. The name is derived from the Greek, Θερεω, I cure, or take care of.
So Thereologist, one skilled in thereology.
1882. in Ogilvie (Annandale).