Quantity /(?)/

Quan·ti·ty

Quantity

n.

pl. Quantities

  1. The attribute of being so much, and not more or less; the property of being measurable, or capable of increase and decrease, multiplication and division; greatness; and more concretely, that which answers the question “How much?”; measure in regard to bulk or amount; determinate or comparative dimensions; measure; amount; bulk; extent; size. (Logic)
  2. That which can be increased, diminished, or measured; especially (Math.), anything to which mathematical processes are applicable. (Math.)
  3. A determinate or estimated amount; a sum or bulk; a certain portion or part; sometimes, a considerable amount; a large portion, bulk, or sum; as, a medicine taken in quantities, that is, in large quantities.
    The quantity of extensive and curious information which he had picked up during many months of desultory, but not unprofitable, study.

Phrases & Compounds
Quantity of estate
its time of continuance, or degree of interest, as in fee, for life, or for years.
Quantity of matter
in a body, its mass, as determined by its weight, or by its momentum under a given velocity.
Quantity of motion
in a body, the relative amount of its motion, as measured by its momentum, varying as the product of mass and velocity.
Known quantities
quantities whose values are given.
Unknown quantities
quantities whose values are sought.