Mental balance.
The condition of a system in which competing influences are balanced, resulting in no net change.
The state of a body at rest or in uniform motion in which the resultant of all forces on it is zero.
The state of a reaction in which the rates of the forward and reverse reactions are the same.
Calmness of temperament, composure; also seen negatively, sluggishness, indifference.
One of the four humors making up the body in ancient and mediaeval medicine; said to be cold and moist, and often identified with mucus.
Viscid mucus produced by the body, later especially mucus expelled from the bronchial passages by coughing.
A watery distillation, especially one obtained from plant matter; an aqueous solution.