Definition that contains for ever
- era (baseball) a measure of a pitcher's effectiveness; calculated as the average number of earned runs allowed by the pitcher for every nine innings pitched
- residual (often plural) a payment that is made to a performer or writer or director of a television show or commercial that is paid for every repeat showing
- corkage a charge added at a restaurant for every bottle of wine served that was not bought on the premises
- earned run average (baseball) a measure of a pitcher's effectiveness; calculated as the average number of earned runs allowed by the pitcher for every nine innings pitched
- metric space a set of points such that for every pair of points there is a nonnegative real number called their distance that is symmetric and satisfies the triangle inequality
- unfunctional not related to or suitable for everyday needs or activities
- analysis situs the branch of pure mathematics that deals only with the properties of a figure X that hold for every figure into which X can be transformed with a one-to-one correspondence that is continuous in both directions
- topology the branch of pure mathematics that deals only with the properties of a figure X that hold for every figure into which X can be transformed with a one-to-one correspondence that is continuous in both directions