Definitions
1.nounForm of a word with a stronger or more forceful sense than the root on which the intensive is built.
2.adjectiveThorough; to a great degree; with intensity.
3.adjectiveDemanding; requiring a great amount of work etc."This job is difficult because it is so labour-intensive."
4.adjectiveHighly concentrated."I took a three-day intensive course in finance."
5.adjectiveStretched; allowing intension, or increase of degree; that can be intensified.
6.adjectiveCharacterized by persistence; intent; assiduous.
7.adjective(grammar) Serving to give force or emphasis."an intensive verb or preposition"
8.adjectiveRelated to the need to manage life-threatening conditions by means of sophisticated life support and monitoring."She was moved to the intensive-care unit of the hospital."