intensive

The definition of intensive is concentrated or strongly focused on a specific thing.

(adjective)

An example of something that would be described as intensive is a month long, detailed study of a book, an intensive study.
An example of something that would be described as intensive is intensive care, a level of care given to critically ill hospital patients.

See intensive in Webster's New World College Dictionary

adjective

increasing or causing to increase in degree or amount
of or characterized by intensity; thorough, profound, and intense; concentrated or exhaustive
designating care of an especially attentive nature given to critically ill hospital patients, typically in a special ward ()
Agric. designating a system of farming which aims at the increase of yield per acre by using increased labor, capital, etc.
Gram. giving force or emphasis; emphasizing: “very” in “the very same man” is an intensive adverb

Origin: ML intensious < L intensus: see intense & -ive

noun

Related Forms:

intensively using, requiring large amounts of, or concentrating within itself large amounts of (a specified thing): energy-intensive

See intensive in American Heritage Dictionary 4

adjective

Of, relating to, or characterized by intensity: intensive training. See Usage Note at intense.
Grammar Tending to emphasize or intensify: an intensive adverb.
Possessing or requiring to a high degree. Often used in combination: research-intensive; labor-intensive.
Relating to or being a method especially of land cultivation intended to increase the productivity of a fixed area by means of an increase in capital and labor.
Physics Having the same value for any subdivision of a thermodynamic system: intensive pressure.