in botany: A genus of the monogynia order, belonging to the tetrandria class of plants; and in the natural method ranking under the 20th order, Rotaceae. The calyx is tetraphyllous; the corolla quadrid, with the tube globular; the capsule two-furrowed, bilocular, polyspermous, and opening at the top.

EXÆRESIS, in surgery, the operation of extracting or taking away something that is hurtful to the human body.