usance (
http://definr.com/usance)
n 1: (commerce) the period of time permitted by commercial usage
for the payment of a bill of exchange (especially a
foreign bill of exchange)
2: (economics) the utilization of economic goods to satisfy
needs or in manufacturing; "the consumption of energy has
increased steadily" [syn:
consumption, {economic
consumption},
use,
use of goods and services]
3: accepted or habitual practice [syn:
custom,
usage]