quantify

Etymology

From Medieval Latin quantificare (introduced by Sir William Hamilton in logic).

verb

1. To assign a quantity to.
2. To determine the value of (a variable or expression).
   As in much of biology, the most satisfying truths in ecology derive from manipulative experimentation. Tinker with nature and quantify how it responds. 2012-01, Robert M. Pringle, “How to Be Manipulative”, in American Scientist, volume 100, number 1, archived from the original on 2013-10-03, page 31
3. (logic) To relate a statement (called a predicate) to a given set using a quantifier—either for all (denoted ∀) or there exists (denoted ∃).
   The statement (∀x∈ℝ),2x=x+x quantifies over the real numbers.