1 covering a large area; great in amount:
The house has extensive grounds. * The fire caused extensive damage. * She suffered extensive injuries in the accident. * Extensive repair work is being carried out. * an extensive range of wines
2 including or dealing with a wide range of information:
Extensive research has been done into this disease. * His knowledge of music is extensive. * She has extensive experience in computers.
extensively adverb:
a spice used extensively in Eastern cooking * She has travelled extensively.
