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2 definitions found
 for Lateral cleavage
From The Collaborative International Dictionary of English v.0.48 :

  Lateral \Lat"er*al\, a. [L. lateralis, fr. latus, lateris, side:
     cf. F. lat['e]ral.]
     1. Of or pertaining to the sides; as, the lateral walls of a
        house; the lateral branches of a tree.
        [1913 Webster]
  
     2. (Anat.) Lying at, or extending toward, the side; away from
        the mesial plane; external; -- opposed to mesial.
        [1913 Webster]
  
     3. Directed to the side; as, a lateral view of a thing.
        [1913 Webster]
  
     Lateral cleavage (Crystallog.), cleavage parallel to the
        lateral planes.
  
     Lateral equation (Math.), an equation of the first degree.
        [Obs.]
  
     Lateral line (Anat.), in fishes, a line of sensory organs
        along either side of the body, often marked by a distinct
        line of color.
  
     Lateral pressure or stress (Mech.), a pressure or stress
        at right angles to the length, as of a beam or bridge; --
        distinguished from longitudinal pressure or stress.
  
     Lateral strength (Mech.), strength which resists a tendency
        to fracture arising from lateral pressure.
  
     Lateral system (Bridge Building), the system of horizontal
        braces (as between two vertical trusses) by which lateral
        stiffness is secured.
        [1913 Webster] lateral

From The Collaborative International Dictionary of English v.0.48 :

  Cleavage \Cleav"age\, n.
     1. The act of cleaving or splitting.
        [1913 Webster]
  
     2. (Crystallog.) The quality possessed by many crystallized
        substances of splitting readily in one or more definite
        directions, in which the cohesive attraction is a minimum,
        affording more or less smooth surfaces; the direction of
        the dividing plane; a fragment obtained by cleaving, as of
        a diamond. See Parting.
        [1913 Webster]
  
     3. (Geol.) Division into lamin[ae], like slate, with the
        lamination not necessarily parallel to the plane of
        deposition; -- usually produced by pressure.
        [1913 Webster]
  
     Basal cleavage, cleavage parallel to the base of a crystal,
        or to the plane of the lateral axes.
  
     Cell cleavage (Biol.), multiplication of cells by fission.
        See Segmentation.
  
     Cubic cleavage, cleavage parallel to the faces of a cube.
        
  
     Diagonal cleavage, cleavage parallel to ta diagonal plane.
        
  
     Egg clavage. (Biol.) See Segmentation.
  
     Lateral cleavage, cleavage parallel to the lateral planes.
        
  
     Octahedral cleavage, Dodecahedral cleavage, or
     Rhombohedral cleavage, cleavage parallel to the faces of an
        octahedron, dodecahedron, or rhombohedron.
  
     Prismatic cleavage, cleavage parallel to a vertical prism.
        [1913 Webster]

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