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[ik-sten-siv] /ɪkˈstɛn sɪv/

of great extent; wide; broad:
an extensive area.
covering or over a great area:
extensive travels.
far-reaching; comprehensive; thorough:
extensive knowledge.
an extensive journey.
great in amount, number, or degree:
an extensive fortune; extensive political influence.
of or having :
Space is extensive, time durational.
noting or pertaining to a system of agriculture involving the use or cultivation of large areas of land with a minimum of labor and expense (opposed to ).
having a large extent, area, scope, degree, etc; vast: extensive deserts, an extensive inheritance
widespread: extensive coverage in the press
(agriculture) involving or farmed with minimum expenditure of capital or labour, esp depending on a large area of land Compare intensive (sense 3)
(physics) of or relating to a property, measurement, etc, of a macroscopic system that is proportional to the size of the system: heat is an extensive property Compare intensive (sense 7)


“vast, far-reaching;” c.1600 of immaterial, c.1700 of material things; from Late Latin extensivus, from extens-, past participle stem of Latin extendere (see extend). Earlier in a medical sense, “characterized by swelling” (early 15c.). Related: Extensively; extensiveness.


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  • Extensor

    [ik-sten-ser, -sawr] /ɪkˈstɛn sər, -sɔr/ noun, Anatomy. 1. a muscle that serves to or straighten a part of the body. /ɪkˈstɛnsə; -sɔː/ noun 1. any muscle that stretches or extends an arm, leg, or other bodily part Compare flexor n. 1713, short for medical Latin musculus extensor, from Late Latin extensor “stretcher,” agent noun from […]

  • Extensor muscle of fingers

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  • Extensor muscle of index finger

    extensor muscle of index finger n. A muscle with its origin from the ulna, with insertion to an aponeurosis of the index finger, with nerve supply from the radial nerve, and whose action assists in extending the forefinger.

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