(statistics) An expression of the lack of precision in the results obtained from a sample. / An amount, beyond the calculated minimum, added for safety.

A part of ocean partially enclosed by land such as islands, archipelagos, or peninsulas.

The ratio of net income to net sales of a company expressed as a percentage.

(finance) Request by a stockbroker or similar for the client to deposit more money in order to cover losses that have built up in open positions held on margin (rather than having been paid for in full).

(economics) The increase in cost that accompanies a unit increase in output; the partial derivative of the cost function with respect to output.

The extra benefit received from a unit increase in the consumption of a good or service. It is calculated as the increase in total benefit divided by the increase in consumption.

(business) The difference between revenue and direct cost, often expressed as the ratio gross margin percent.

(business) The amount of money which a business generates after deducting all expenses, including taxes; often expressed as the ratio net margin percent.

(economics) A theory that attempts to explain the discrepancy in the value of goods and services by reference to their secondary, or marginal, utility.

(finance, historical) A method by which a merchant at home can render bills drawn upon him abroad saleable there, by associating a well-known banker's name on their margin with his own.