[1] : The Collaborative International Dictionary of English v.0.48

pace \pace\ p=as, n. oe. pas, f. pas, from l. passus a
   step, pace, orig., a stretching out of the feet in walking;
   cf. pandere, passum, to spread, stretch; perh. akin to e.
   patent. cf. pas, pass.
   1. a single movement from one foot to the other in walking; a
      step.
      1913 webster

   2. the length of a step in walking or marching, reckoned from
      the heel of one foot to the heel of the other; -- used as
      a unit in measuring distances; as, he advanced fifty
      paces. "the height of sixty pace ." --chaucer.
      1913 webster

   note: ordinarily the pace is estimated at two and one half
         linear feet; but in measuring distances be stepping,
         the pace is extended to three feet one yard or to
         three and three tenths feet one fifth of a rod. the
         regulation marching pace in the english and united
         states armies is thirty inches for quick time, and
         thirty-six inches for double time. the roman pace
         passus was from the heel of one foot to the heel of
         the same foot when it next touched the ground, five
         roman feet.
         1913 webster

   3. manner of stepping or moving; gait; walk; as, the walk,
      trot, canter, gallop, and amble are paces of the horse; a
      swaggering pace; a quick pace. --chaucer.
      1913 webster

            to-morrow, and to-morrow, and to-morrow,
            creeps in this petty pace from day to day. --shak.
      1913 webster

            in the military schools of riding a variety of paces
            are taught.                           --walsh.
      1913 webster

   4. a slow gait; a footpace. obs. --chucer.
      1913 webster

   5. specifically, a kind of fast amble; a rack.
      1913 webster

   6. any single movement, step, or procedure. r.
      1913 webster

            the first pace necessary for his majesty to make is
            to fall into confidence with spain.   --sir w.
                                                  temple.
      1913 webster

   7. arch. a broad step or platform; any part of a floor
      slightly raised above the rest, as around an altar, or at
      the upper end of a hall.
      1913 webster

   8. weaving a device in a loom, to maintain tension on the
      warp in pacing the web.
      1913 webster

   9. the rate of progress of any process or activity; as, the
      students ran at a rapid pace; the plants grew at a
      remarkable pace.
      pjc

   geometrical pace, the space from heel to heel between the
      spot where one foot is set down and that where the same
      foot is again set down, loosely estimated at five feet, or
      by some at four feet and two fifths. see roman pace in
      the note under def. 2. obs.

   to keep pace with or to hold pace with, to keep up with;
      to go as fast as. "in intellect and attainments he kept
      pace with his age." --southey.

   to put someone through one's paces to cause someone to
      perform an act so as to demonstrate his/her skill or
      ability.
      1913 webster +pjc
see also:
pas pass geometrical pace roman pace to keep pace with to hold pace with 
to put someone through one's paces 

Artificial Pace >> A Words
Artificial Pace, definition of term: Artificial Pace
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