extensive
Etymology

From late Middle English, borrowed from Late Latin extensīvus, from Latin extensus.

Pronunciation
  • IPA: /ɪkˈstɛn.sɪv/
  • (America) IPA: /ɛksˈtɛn.sɪv/
Adjective

extensive

  1. Having a great extent; covering a large area; vast.
  2. (figurative) Considerable in amount.
    I have done extensive research on the subject.
  3. Serving to extend or lengthen; characterized by extension.
    • 1650, Thomas Browne, Pseudodoxia Epidemica: […], 2nd edition, London: […] A[braham] Miller, for Edw[ard] Dod and Nath[aniel] Ekins, […], →OCLC ↗:
      For station is properly no rest, but one kind of motion, relating unto that which physicians (from Galen) do name extensive or tonical; that is, an extension of the muscles and organs of motion, maintaining the body at length, or in its proper figure.
  4. (physics) Having a combined system entropy that equals the sum of the entropies of the independent systems.
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