Source : Webster's Revised Unabridged Dictionary (1913)

Isochronize \I*soch"ro*nize\, v. t. [imp. & p. p. {-nized}; p.
   pr. & vb. n. {-nizing}.] [See {Isochronous}.]
   To make, or tend to make (the motion of a moving body),
   uniform in rate of rotation, or in frequency of vibration.