concretion

/kɑnˈkriʃən/
noun
  1. A hard, solid mass formed by the gathering together of particles or material, especially in rock or soil.
    • The cave floor was covered with small concretions of calcium carbonate.
    • Geologists found a round concretion of ironstone in the desert.
    • Some fossils are preserved inside concretions that formed around them millions of years ago.
  2. The process of forming into a solid mass; the act of becoming concrete or tangible.
    • The concretion of the wet sand into hard sandstone took thousands of years.
    • The concretion of the team's ideas into a final design required many meetings.
    • In philosophy, concretion refers to the process of an abstract idea becoming a real thing.
Antonyms
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