Encyclopædia Britannica, First Edition/Abatement

ABATEMENT, in heraldry, implies something added to a coat of arms to lessen its dignity, and point out some imperfection or stain in the character of its wearer.

Abatement, in law. See Abate.

Abatement, in commerce, signifies an allowance or discount in the price of certain commodities, in consideration of prompt payment; a diminution in the stipulated quantity or quality of goods, or some such circumstance.

Abatement, in the customs, an allowance made upon the duty of goods, when the quantum damaged is determined by the judgment of two merchants upon oath, and ascertained by a certificate from the surveyor and land-waiter.