PURCHASE n.
aid, or contracted to be paid, for anything bought. Berkeley. -- Worth, or At, [so many] years' purchase, a phrase by which the value or cost of a thing is expressed in the length of time required for the income to amount to the purchasing price; as, he bought the estate at a twenty years' purchase. To say one's life…
QUANTITY n.
estate (Law), its time of continuance, or degree of interest, as in fee, for life, or for years. Wharton (Law Dict. ) -- Quantity of matter, in a body, its mass, as determined by its weight, or by its momentum under a given velocity. -- Quantity of motion (Mech.), in a body, the relative amount of its motion, as measu…