Meaning of EXTENSIVE in English
adj.1 covering a large area in space or time.
2 having a wide scope; far-reaching, comprehensive (an extensive knowledge of music).
3 Agriculture involving cultivation from a large area, with a minimum of special resources (cf. INTENSIVE).
extensively adv. extensiveness n.
Etymology: F extensif -ive or LL extensivus (as EXTENSION)
Oxford English vocab. Оксфордский английский словарь. 2012