/in ten"seuh fuy'euhr/ , 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.
[ 1825-35; INTENSIFY + -ER 1 ]