The Collaborative International Dictionary of English v.0.48:

Partition \Par*ti"tion\, v. t. [imp. & p. p. Partitioned; p.
   pr. & vb. n. Partitioning.]
   1. To divide into parts or shares; to divide and distribute;
      as, to partition an estate among various heirs.
      [1913 Webster]

   2. To divide into distinct parts by lines, walls, etc.; as,
      to partition a house.
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            Uniform without, though severally partitioned
            within.                               --Bacon.
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The Collaborative International Dictionary of English v.0.48:

Partition \Par*ti"tion\, n. [F. partition, L. partitio. See
   Part, v.]
   1. The act of parting or dividing; the state of being parted;
      separation; division; distribution; as, the partition of a
      kingdom.
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            And good from bad find no partition.  --Shak.
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   2. That which divides or separates; that by which different
      things, or distinct parts of the same thing, are
      separated; separating boundary; dividing line or space;
      specifically, an interior wall dividing one part or
      apartment of a house, a compartment of a room, an
      inclosure, or the like, from another; as, a brick
      partition; lath and plaster partitions; cubicles with
      four-foot high partitions.
      [1913 Webster +PJC]

            No sight could pass
            Betwixt the nice partitions of the grass. --Dryden.
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   3. A part divided off by walls; an apartment; a compartment.
      [R.] "Lodged in a small partition." --Milton.
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   4. (Law.) The severance of common or undivided interests,
      particularly in real estate. It may be effected by consent
      of parties, or by compulsion of law.
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   5. (Mus.) A score.
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   Partition of numbers (Math.), the resolution of integers
      into parts subject to given conditions. --Brande & C.
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Moby Thesaurus II by Grady Ward, 1.0:

133 Moby Thesaurus words for "partition":
   abstraction, alienation, allotment, apportion, apportioning,
   apportionment, area, barrier, bisector, booth, boundary, brattice,
   breaking up, budgeting, buffer, buffer state, bulkhead, bumper,
   carve, carve up, cell, chamber, cloison, collision mat,
   compartment, cushion, cut, cut up, cutting, cutting the pie, deal,
   detachment, diameter, diaphragm, disarticulation, disassociation,
   disburse, disconnectedness, disconnection, discontinuity,
   disengagement, disjointing, disjunction, dislocation, dispense,
   disperse, dissepiment, dissolution, distribution, district,
   disunion, divide, divide into shares, divide up, divide with,
   divider, dividing, dividing line, dividing wall, division, divorce,
   divorcement, divvy, divvy up, dole out, doling out, equator,
   fence off, fender, halfway mark, incoherence, interseptum,
   isolation, line of demarcation, luxation, mat, measure out,
   meting out, midriff, midsection, pad, panel, parcel, parcel out,
   parceling, paries, part, parting, partitioning, party wall,
   portion, portioning, property line, rationing, removal,
   repartition, room, rupture, screen, section, segment, segmentation,
   segmenting, separate, separation, separatism, separator, septulum,
   septum, set apart, share, share out, share with, sharing,
   sharing out, shock pad, slice, slice the pie, slice up, slicing,
   split, split up, split-up, splitting, stall, subdivide,
   subdivision, subtraction, wall, wall off, withdrawal, zone,
   zoning