# quantify

## English

### Etymology

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

### Pronunciation

• (US) IPA(key): /ˈkwɑːn.tə.faɪ/
•  Audio (UK) (file)

### Verb

quantify (third-person singular simple present quantifies, present participle quantifying, simple past and past participle quantified)

1. To assign a quantity to.
2. To determine the value of (a variable or expression).
• 2012 January 1, Robert M. Pringle, “How to Be Manipulative”, in American Scientist[1], volume 100, number 1, page 31:
As in much of biology, the most satisfying truths in ecology derive from manipulative experimentation. Tinker with nature and quantify how it responds.
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 ${\displaystyle (\forall x\in \mathbb {R} )\,2x=x+x}$ quantifies over the real numbers.