intensive

adjective

• 1concentrated on a single subject or into a short time; very thorough or vigorous:she undertook an intensive Arabic course eight days of intensive arms talks
• (of agriculture) aiming to achieve maximum production within a limited area, especially by using chemical and technological aids:intensive farming less intensive, more environmentally friendly forms of farmingOften contrasted with extensive (sense 2).
• [usually in combination] (typically in business and economics) concentrating on or making much use of a specified thing:computer-intensive methods

• 2 Grammar (of an adjective, adverb, or particle) giving force or emphasis.

• 3chiefly Physics denoting a property which is measured in terms of intensity (e.g. concentration) rather than of extent (e.g. volume), and so is not simply increased by addition of one thing to another.

noun

• an intensive adjective, adverb, or particle; an intensifier.