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segmentation
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English Dictionary: Segmentation by the DICT Development Group
3 results for Segmentation
From WordNet (r) 3.0 (2006) [wn]:
segmentation
n
  1. (embryology) the repeated division of a fertilised ovum
    Synonym(s): cleavage, segmentation
  2. the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart
    Synonym(s): division, partition, partitioning, segmentation, sectionalization, sectionalisation
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Segmentation \Seg`men*ta"tion\, n.
      The act or process of dividing into segments; specifically
      (Biol.), a self-division into segments as a result of growth;
      cell cleavage; cell multiplication; endogenous cell
      formation.
  
      {Segmentation cavity} (Biol.), the cavity formed by the
            arrangement of the cells in segmentation or cleavage of
            the ovum; the cavity of the blastosphere. In the gastrula
            stage, the segmentation cavity in which the mesoblast is
            formed lies between the entoblast and ectoblast. See
            Illust. of {Invagination}.
  
      {Segmentation nucleus} (Biol.), the body formed by fusion of
            the male and female pronucleus in an impregnated ovum. See
            the Note under {Pronucleus}.
  
      {Segmentation of the ovum}, [or] {Egg cleavage} (Biol.), the
            process by which the embryos of all the higher plants and
            animals are derived from the germ cell. In the simplest
            case, that of small ova destitute of food yolk, the ovum
            or egg divides into two similar halves or segments
            (blastomeres), each of these again divides into two, and
            so on, thus giving rise to a mass of cells (mulberry mass,
            or morula), all equal and similar, from the growth and
            development of which the future animal is to be formed.
            This constitutes regular segmentation. Quite frequently,
            however, the equality and regularity of cleavage is
            interfered with by the presence of food yolk, from which
            results unequal segmentation. See {Holoblastic},
            {Meroblastic}, {Alecithal}, {Centrolecithal},
            {Ectolecithal}, and {Ovum}.
  
      {Segmentation sphere} (Biol.), the blastosphere, or morula.
            See {Morula}.

From The Free On-line Dictionary of Computing (15Feb98) [foldoc]:
   segmentation
  
      (Or "segmentation and reassembly", SAR) Breaking
      an arbitrary size {packet} into smaller pieces at the
      transmitter.   This may be necessary because of restrictions in
      the communications channel or to reduce {latency}.   The pieces
      are joined back together in the right order at the receiver
      ("reassembly").   Segmentation may be performed by a {router}
      when routing a packet to a network with a smaller maximum
      packet size.
  
      The term "segmentation" is used in {ATM}, in {TCP/IP}, it is
      called "fragmentation" an is performed at the {IP} layer
      before the "fragments" are passed to the {transport layer}.
  
      See for example {ATM forum} {UNI} 4.0 specification.
  
      [Better reasons?]
  
      (1999-06-14)
  
  
No guarantee of accuracy or completeness!
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