concretion

  1. Noun.  The process of aggregating or coalescing into a mass.
  2. Noun.  A solid, hard mass formed by a process of aggregation or coalescence.
  3. Noun.  (geology) A rounded mass of a mineral, sometimes found in sedimentary rock or on the ocean floor.
  4. Noun.  The action of making something concrete or the result of such an action.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.