in ‧ ten ‧ sive AC /ɪnˈtensɪv/ BrE AmE adjective
1 . involving a lot of activity, effort, or careful attention in a short period of time:
a one-week intensive course in English
a day of intensive negotiations
2 . intensive farming/agriculture farming which produces a lot of food from a small area of land
3 . energy-intensive/knowledge-intensive etc involving or needing a lot of energy, knowledge etc:
a knowledge-intensive industry
⇨ ↑ capital-intensive , ↑ labour-intensive
—intensively adverb