Interest

in'tSr-est, n. Premium paid for the use of money; profit per cent, derived from money lent, or property used by another person, or from debts remaining unpaid; any surplus advantage, or unexpected advance in returning what has been received. [OF., an interest in, right or title to a thing, premium on money, L. interest, profitable, fr. intere e (see above); F. inter it, Sp. in teres, Pg., and LL. intere e, interest.] — Compound interest. That which arises from the principal with the interest added; interest on interest. — Simple That which arises from the principal sum_ontv.