(economics) The idea that consumers are forward-looking and so internalize the government's budget constraint when making their consumption decisions, so that, for a given pattern of government spending, the method of financing such spending does not affect agents' consumption decisions, and thus does not change aggregate demand.

(combinatorics) Of tableaux: able to be transformed into each other by a sequence of jeu de taquin slides.

(physics) the principle that the laws of gravity are independent of velocity and position

(telecommunications) A number denoting the electrical load of a telephone ringer circuit on a particular line.

plural of ringer equivalence number

(historical, chemistry) Any of a group of people who proposed a system of atomic weights based on combining equivalents

plural of equivalentist