The Collaborative International Dictionary of English v.0.48:

Step \Step\, v. i. [imp. & p. p. Stepped; p. pr. & vb. n.
   Stepping.] [AS. staeppan; akin to OFries. steppa, D.
   stappen to step, stap a step, OHG. stepfen to step, G. stapfe
   a footstep, OHG. stapfo, G. stufe a step to step on; cf. Gr.
   ? to shake about, handle roughly, stamp (?). Cf. Stamp, n.
   & a.]
   1. To move the foot in walking; to advance or recede by
      raising and moving one of the feet to another resting
      place, or by moving both feet in succession.
      [1913 Webster]

   2. To walk; to go on foot; esp., to walk a little distance;
      as, to step to one of the neighbors.
      [1913 Webster]

   3. To walk slowly, gravely, or resolutely.
      [1913 Webster]

            Home the swain retreats,
            His flock before him stepping to the fold.
                                                  --Thomson.
      [1913 Webster]

   4. Fig.: To move mentally; to go in imagination.
      [1913 Webster]

            They are stepping almost three thousand years back
            into the remotest antiquity.          --Pope.
      [1913 Webster]

   To step aside, to walk a little distance from the rest; to
      retire from company.

   To step forth, to move or come forth.

   To step in or To step into.
      (a) To walk or advance into a place or state, or to
          advance suddenly in.
          [1913 Webster]

                Whosoever then first, after the troubling of the
                water, stepped in, was made whole of whatsoever
                disease he had.                   --John v. 4.
          [1913 Webster]
      (b) To enter for a short time; as, I just stepped into the
          house.
      (c) To obtain possession without trouble; to enter upon
          easily or suddenly; as, to step into an estate.

   To step out.
      (a) (Mil.) To increase the length, but not the rapidity,
          of the step, extending it to thirty-tree inches.
      (b) To go out for a short distance or a short time.

   To step short (Mil.), to diminish the length or rapidity of
      the step according to the established rules.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Step \Step\, v. t.
   1. To set, as the foot.
      [1913 Webster]

   2. (Naut.) To fix the foot of (a mast) in its step; to erect.
      [1913 Webster]

   To step off, to measure by steps, or paces; hence, to
      divide, as a space, or to form a series of marks, by
      successive measurements, as with dividers.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Step \Step\, n. [AS. staepe. See Step, v. i.]
   1. An advance or movement made by one removal of the foot; a
      pace.
      [1913 Webster]

   2. A rest, or one of a set of rests, for the foot in
      ascending or descending, as a stair, or a round of a
      ladder.
      [1913 Webster]

            The breadth of every single step or stair should be
            never less than one foot.             --Sir H.
                                                  Wotton.
      [1913 Webster]

   3. The space passed over by one movement of the foot in
      walking or running; as, one step is generally about three
      feet, but may be more or less. Used also figuratively of
      any kind of progress; as, he improved step by step, or by
      steps.
      [1913 Webster]

            To derive two or three general principles of motion
            from phenomena, and afterwards to tell us how the
            properties and actions of all corporeal things
            follow from those manifest principles, would be a
            very great step in philosophy.        --Sir I.
                                                  Newton.
      [1913 Webster]

   4. A small space or distance; as, it is but a step.
      [1913 Webster]

   5. A print of the foot; a footstep; a footprint; track.
      [1913 Webster]

   6. Gait; manner of walking; as, the approach of a man is
      often known by his step.
      [1913 Webster]

   7. Proceeding; measure; action; an act.
      [1913 Webster]

            The reputation of a man depends on the first steps
            he makes in the world.                --Pope.
      [1913 Webster]

            Beware of desperate steps. The darkest day,
            Live till to-morrow, will have passed away.
                                                  --Cowper.
      [1913 Webster]

            I have lately taken steps . . . to relieve the old
            gentleman's distresses.               --G. W. Cable.
      [1913 Webster]

   8. pl. Walk; passage.
      [1913 Webster]

            Conduct my steps to find the fatal tree. --Dryden.
      [1913 Webster]

   9. pl. A portable framework of stairs, much used indoors in
      reaching to a high position.
      [1913 Webster]

   10. (Naut.) In general, a framing in wood or iron which is
       intended to receive an upright shaft; specif., a block of
       wood, or a solid platform upon the keelson, supporting
       the heel of the mast.
       [1913 Webster]

   11. (Mach.)
       (a) One of a series of offsets, or parts, resembling the
           steps of stairs, as one of the series of parts of a
           cone pulley on which the belt runs.
       (b) A bearing in which the lower extremity of a spindle
           or a vertical shaft revolves.
           [1913 Webster]

   12. (Mus.) The intervak between two contiguous degrees of the
       csale.
       [1913 Webster]

   Note: The word tone is often used as the name of this
         interval; but there is evident incongruity in using
         tone for indicating the interval between tones. As the
         word scale is derived from the Italian scala, a ladder,
         the intervals may well be called steps.
         [1913 Webster]

   13. (Kinematics) A change of position effected by a motion of
       translation. --W. K. Clifford.
       [1913 Webster]

   14. (Fives) At Eton College, England, a shallow step dividing
       the court into an inner and an outer portion.
       [Webster 1913 Suppl.]

   Back step, Half step, etc. See under Back, Half, etc.


   Step grate, a form of grate for holding fuel, in which the
      bars rise above one another in the manner of steps.

   To take steps, to take action; to move in a matter.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Step- \Step-\ [AS. ste['o]p-; akin to OFries. stiap-, stiep-, D.
   & G. stief-, OHG. stiuf-, Icel. stj?p-, Sw. styf-, and to AS.
   [=a]st[=e]pan, [=a]ste['o]pan, to deprive, bereave, as
   children of their parents, OHG. stiufen.]
   A prefix used before father, mother, brother, sister, son,
   daughter, child, etc., to indicate that the person thus
   spoken of is not a blood relative, but is a relative by the
   marriage of a parent; as, a stepmother to X is the wife of
   the father of X, married by him after the death of the mother
   of X. See Stepchild, Stepdaughter, Stepson, etc.
   [1913 Webster]

WordNet (r) 3.0 (2006):

step
    n 1: any maneuver made as part of progress toward a goal; "the
         situation called for strong measures"; "the police took
         steps to reduce crime" [syn: measure, step]
    2: the distance covered by a step; "he stepped off ten paces
       from the old tree and began to dig" [syn: footstep, pace,
       step, stride]
    3: the act of changing location by raising the foot and setting
       it down; "he walked with unsteady steps"
    4: support consisting of a place to rest the foot while
       ascending or descending a stairway; "he paused on the bottom
       step" [syn: step, stair]
    5: relative position in a graded series; "always a step behind";
       "subtle gradations in color"; "keep in step with the
       fashions" [syn: gradation, step]
    6: a short distance; "it's only a step to the drugstore" [syn:
       step, stone's throw]
    7: the sound of a step of someone walking; "he heard footsteps
       on the porch" [syn: footfall, footstep, step]
    8: a musical interval of two semitones [syn: tone, whole
       tone, step, whole step]
    9: a mark of a foot or shoe on a surface; "the police made casts
       of the footprints in the soft earth outside the window" [syn:
       footprint, footmark, step]
    10: a solid block joined to the beams in which the heel of a
        ship's mast or capstan is fixed
    11: a sequence of foot movements that make up a particular
        dance; "he taught them the waltz step" [syn: dance step,
        step]
    v 1: shift or move by taking a step; "step back"
    2: put down or press the foot, place the foot; "For fools rush
       in where angels fear to tread"; "step on the brake" [syn:
       step, tread]
    3: cause (a computer) to execute a single command
    4: treat badly; "This boss abuses his workers"; "She is always
       stepping on others to get ahead" [syn: mistreat,
       maltreat, abuse, ill-use, step, ill-treat]
    5: furnish with steps; "The architect wants to step the terrace"
    6: move with one's feet in a specific manner; "step lively"
    7: walk a short distance to a specified place or in a specified
       manner; "step over to the blackboard"
    8: place (a ship's mast) in its step
    9: measure (distances) by pacing; "step off ten yards" [syn:
       pace, step]
    10: move or proceed as if by steps into a new situation; "She
        stepped into a life of luxury"; "he won't step into his
        father's footsteps"

Moby Thesaurus II by Grady Ward, 1.0:

484 Moby Thesaurus words for "step":
   abdicate, accelerate, accomplished fact, accomplishment,
   according to, ace, achievement, act, acta, action, activity,
   ad hoc measure, adventure, amble, ambulate, amount, ankle, answer,
   appraise, appreciate, approach, appropriate to, arabesque,
   artifice, assay, assess, attempt, band, be alert, be careful,
   be cautious, bed, bedding, belt, bestride, bid, bit, blow, boost,
   boss, bound, bow out, bowshot, brief span, bump, bypass, calculate,
   caliber, calibrate, caliper, canter, career, chasse,
   check a parameter, circumambulate, clip, clop, close quarters,
   close range, colophon, compass, compute, concavity,
   consecutive intervals, consistent with, contrivance, conventional,
   convexity, couche, countermove, coup, coupe, course,
   course of action, crack, cross, cut, dactylogram, dactylograph,
   dealings, deck, decrease, deed, degree, demarche, dent, device,
   dial, diapason, diatessaron, diatonic interval, diatonic semitone,
   diminish, dint, direction, divide, do something, dodge, doing,
   doings, doorstep, drag, droop, earreach, earshot, eccentric,
   effort, embossment, endeavor, enharmonic diesis,
   enharmonic interval, enterprise, escalate, essay, estimate,
   evaluate, excrescence, exercise care, expedient, experiment,
   exploit, extent, fait accompli, fathom, feat, fifth, fingerprint,
   fling, floor, flounce, foot, foot it, footfall, footmark,
   footprint, footrest, footstep, ford, fossil footprint, fourth,
   fox-trot, gait, gallery, gallop, gambade, gambado, gambit, gauge,
   gest, get, get ahead of, gimmick, git, go, go across, go by,
   go out, gradation, grade, gradually, graduate, grapevine, gunshot,
   hair, hair space, hairbreadth, hairsbreadth, half step, halftone,
   hand, handiwork, hasten, height, hightail, hippety-hop, hitch,
   hobble, hoof, hoof it, hoofbeat, hop, hop along, hotfoot, hurry up,
   ichnite, ichnolite, impress, impression, imprint, improve,
   improvisation, in keeping with, in step with, inch, increase,
   indent, indentation, indention, initiative, intensify, intercede,
   interfere, interval, intervene, jaywalk, job, jog, jog on, journey,
   journeying, jump, jury-rig, jury-rigged expedient, kinky,
   last expedient, last resort, last shift, layer, leap, leave, ledge,
   leg, leg it, less semitone, level, lick, limp, little, little ways,
   lock step, look, lope, lump, lurch, make haste, make tracks,
   makeshift, maneuver, mark, means, measure, measures,
   melodic interval, mensurate, mete, meter, mince, mincing steps,
   motion, move, movement, notch, note, nuance, octave, offbeat,
   offer, operation, overlayer, overstory, overstride, overt act,
   pace, pad, paddle, parallel octaves, pas, pass, pass by, pass over,
   passage, path, paw print, pawmark, pedestrianize, peg, perambulate,
   performance, period, peripateticate, piaffer, pimple, pis aller,
   pistol shot, pitch, plane, plateau, plumb, point, prance, print,
   prize, probe, procedure, proceed, proceeding, process, production,
   progress, progression, proportion, pug, pugmark, quantify,
   quantize, quickstep, quit, rack, raise, range, rate, ratio, reach,
   reduce, remove, res gestae, resign, resort, resource, rest, retire,
   riser, roll, round, route, routine, run, rundle, rung, saunter,
   scale, scope, scuttle, seal, seam, secede, second, semitone,
   seventh, shade, shadow, shake-up, shamble, shelf, shift,
   shoot ahead of, short distance, short piece, short way, shot,
   shuffle, shuffle along, sidle, sigil, signet, single-foot, sixth,
   size, size up, skip, slink, slither, slouch, slowly, slowness,
   socialize, solution, sound, space, span, speed up,
   spitting distance, spoke, spoor, spring, sprint, stab, stage,
   stagger, stair, staircase, stairs, stairway, stalk, stamp,
   standard, stave, steadily, step along, step by step, step down,
   step in, step lively, step on it, step out, step stool, step up,
   stepladder, stepping-stone, steps, stint, stoop, stopgap, story,
   straddle, stratagem, stratum, stride, string, stroke,
   stroke of policy, stroll, strolling gait, strong bid, strut, stud,
   stump it, stunt, substratum, superstratum, survey, swagger, swing,
   tactic, take a reading, take care, take heed, take steps,
   temporary expedient, tentative, thickness, thing, thing done,
   third, thumbmark, thumbprint, tier, toddle, tone, topsoil, totter,
   tour de force, trace, track, tract, traditional, traipse,
   transaction, travel, travels, tread, trial, trial and error,
   triangulate, trick, trip, troop, trot, trump, try, turn,
   unconventional, underlayer, understory, understratum, undertaking,
   unison interval, up, valuate, value, velocity, vestige, waddle,
   walk, way, weigh, whack, whole step, withdraw, work,
   working hypothesis, working proposition, works, zone



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

STEP
       STandard for the External representation / Exchange of Product
data definition (ISO, DP 10303, CAD)


The Free On-line Dictionary of Computing (30 December 2018):

Standard for the exchange of product model data
STEP

   (STEP) A draft ISO standard for the exchange of CAD
   data.

   See also PDES.

   (1995-02-22)