(statistics) In a set of data, the average of the absolute values of the deviations from a chosen central point.

plural of mean free path

plural of root mean square

A medium of exchange.

(economics, Marxism) The combination of the means of labor, such as machines, tools, and equipment, and the subject of labor used by workers to make products.

The situation in which a word or phrase has two different, often opposite, meanings. For example, wicked can mean both "good" and "bad".

plural of golden mean

Any of the different kinds of transport facilities used to carry people or cargo.

(idiomatic) Not at all, not in the slightest

Income from one's own assets resulting in no need for employment.