In*ten"sive (?), a. [Cf. F. intensif. See Intense.]
1.
Stretched; admitting of intension, or increase of degree; that can be intensified. Sir M. Hale.
2.
Characterized by persistence; intent; unremitted; assiduous; intense. [Obs.] Sir H. Wotton.
3. (Gram.)
Serving to give force or emphasis; as, an intensive verb or preposition.
© Webster 1913
In*ten"sive, n.
That which intensifies or emphasizes; an intensive verb or word.
© Webster 1913
In*ten"sive, a. (Agric.)
Designating, or pertaining to, any system of farming or horticulture, usually practiced on small pieces of land, in which the soil is thoroughly worked and fertilized so as to get as much return as possible; -- opposed to extensive.
© Webster 1913