Definify.com

Webster 1913 Edition

Noun.

(Med.)

A remedy which restores the natural order of the inverted irritative motions in the animal system.

[Obs.]

E. Darwin.

Noun.

A medicine which restores the natural order of the inverted irritative motions in the animal system.

revertent ‎(plural revertents)

(medicine, obsolete) A remedy which restores the natural order of the inverted irritative motions in the animal system.
(Can we find and add a quotation of E. Darwin to this entry?)

revertent