a That can be characterized as a confirmation of truth.
a That has physical existence.
a (economics) Having been adjusted to remove the effects of inflation; contrasted withnominal.
a (economics) Relating to the result of the actions of rational agents; relating to neoclassical economic models as opposed to Keynesian models.
a (mathematics|of a number) Being either a rational number, or the limit of a convergent infinite sequence of rational numbers: being one of a set of numbers with a one-to-one correspondence to the points on a line.
a (legal) Relating to immovable tangible property.
a That is an exemplary or pungent instance of a class or type.