Source : Webster's Revised Unabridged Dictionary (1913)

Utilize \U"til*ize\, v. t. [imp. & p. p. {Utilized}; p. pr. &
   vb. n. {Utilizing}.] [Cf. F. utiliser.]
   To make useful; to turn to profitable account or use; to make
   use of; as, to utilize the whole power of a machine; to
   utilize one's opportunities.

         In former ages, the mile-long corridors, with their
         numerous alcoves, might have been utilized as . . .
         dungeons.                                --Hawthorne.