"vast, far-reaching;" c. 1600 of immaterial, c. 1700 of material things; from Late Latin extensivus, from extens-, past-participle stem of Latin extendere "to stretch out, spread" (see extend). Earlier in a medical sense, "characterized by swelling" (early 15c.). Related: Extensively; extensiveness.
they suffered extensive damage
an extensive Roman settlement in northwest England
agriculture of the extensive type
producing wheat under extensive conditions
extend
extended
extender
extensible
extension
extensive
extensor
extent
extenuate
extenuation
exterior
