Pronunciation: (in-ten'su-fī"ur),[key] —n. 1. a person or thing that intensifies.
2. Gram.a word, esp. an adverb, or other linguistic element that indicates, and usually increases, the degree of emphasis or force to be given to the element it modifies, as very or somewhat; intensive adverb.
3. a ram-operated device for increasing hydraulic pressure.