in Medicine, an half-bath, wherein the patient is only placed up to the navel.

SEMI DIAMETER, half the diameter, or a right line drawn from the centre of a circle or sphere to its circumference: being the same with what is otherwise called the radius.

SEMFLOSCULUS, in Botany, a term used to express the flowers of the lyngenia clas. These semiflocculi are petals, hollow in their lower part, but in their upper flat, and continued in the shape of a tongue.

SEMITONE, in Music. See INTERVAL.