All, everything, everyone; all that, all of those.

(transitive) To measure the quantity of, especially with high accuracy and taking uncertainty into account, as in quantitative analysis.

A fundamental, generic term used when referring to the measurement (count, amount) of a scalar, vector, number of items or to some other way of denominating the value of a collection or group of items.

Of a measurement based on some quantity or number rather than on some quality / (chemistry) Of a form of analysis that determines the amount of some element or compound in a sample

(logic) The operator, represented by the symbol ∃, used in predicate calculus to indicate that a predicate is true for at least one member of a specified set. Verbal equivalents include "there exists" and "there is".

(logic) The operator, represented by the symbol ∀, used in predicate calculus to indicate that a predicate is true for all members of a specified set.

Capable of being quantified.

Something that can be quantified; a measurable.

A person who calculates the cost of materials and labour on a construction project based on an architect's plans.

To assign a quantity to. / To determine the value of (a variable or expression).