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

concretion \concre"tion\, n. l. concretio.
   1. the process of concreting; the process of uniting or of
      becoming united, as particles of matter into a mass;
      solidification.
      1913 webster

   2. a mass or nodule of solid matter formed by growing
      together, by congelation, condensation, coagulation,
      induration, etc.; a clot; a lump; a calculus.
      1913 webster

            accidental ossifications or deposits of phosphates
            of lime in certain organs . . . are called osseous
            concretions.                          --dunglison.
      1913 webster

   3. geol. a rounded mass or nodule produced by an
      aggregation of the material around a center; as, the
      calcareous concretions common in beds of clay.
      1913 webster

[2] : WordNet (r) 2.0

concretion
     n 1: the formation of stonelike objects within a body organ
          e.g., the kidneys
     2: a hard lump produced by the concretion of mineral salts;
        found in hollow organs or ducts of the body; "renal
        calculi can be very painful" syn: calculus
     3: an increase in the density of something syn: compaction,
        compression, densification
     4: the union of diverse things into one body or form or group;
        the growing together of parts syn: coalescence, coalescency,
         coalition, conglutination
see also:
calculus compaction compression densification coalescence coalescency 
coalition conglutination 

Concretion >> C Words
Concretion, definition of term: Concretion
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