Definition of concretion in English:

concretion

noun

  • 1A hard solid mass formed by the local accumulation of matter, especially within the body or within a mass of sediment:

    ‘nodular concretions of siderite growing within the sediments’
    • ‘The authors show that early concretion growth prevented collapse and infilling of voids in the organisms, in the time-interval between organic decay and precipitation of calcite.’
    • ‘Coal balls are concretions of permineralized peat formed in place.’
    • ‘Asbestos bodies are asbestos fibers that have been coated with an iron-rich, proteinaceous concretion.’
    • ‘Eventually, the sandstone slowly eroded away and the hard, erosion-resistant concretions were left on the ground.’
    • ‘To make matters worse, the concretions can be associated with cycads.’
    • ‘Most specimens are contained in concretions and are preserved only because the concretions formed around them.’
    • ‘This spike has been previously regarded as diagenetic, as the samples analysed correspond to limestone concretions.’
    • ‘The mudstones are dark and contain calcareous concretions, the latter brecciated and with calcareous veins.’
    • ‘A nodule is a type of concretion with a rough and knobby surface.’
    • ‘Preservation of non-biomineralized tissues within concretions occurs through most of the Phanerozoic, from the Upper Cambrian to the Recent.’
    • ‘Septarian concretions, some as much as 6 feet in diameter, occur in the Mancos Shale north of the town of Grand Junction where the land slopes upward toward the base of the Book Cliffs.’
    • ‘They sometimes are found together with dolostone concretions, barite nodules, or phosphatic nodules.’
    • ‘At certain levels, carbonate-rich beds are present, inside which decimetre-scale hard calcareous concretions develop.’
    • ‘The barite and calcite form excellent euhedral crystals in concretions within the Cretaceous-age Mancos Shale.’
    • ‘Large chert concretions appear 8 m above the base of the unit at Muller Canyon whereas at Reno Draw they do not appear until 18 m above the base.’
    • ‘The bodies of many smaller concretions are surrounded by a shell of fine-grained pyrite.’
    • ‘The biomineralized shells of trilobites, gastropods and brachiopods are preserved within the concretions.’
    • ‘These are found rarely in large septarian concretions in the Huron Shale in north-central Ohio near Milan, in Huron County.’
    • ‘Recently, one of us saw a bin of silicified barite concretion fragments in a Utah rock shop that were being sold as cycad specimens.’
    • ‘Coal balls are a particular type of carbonate concretion that has been long known for the superb preservation of plant material.’
    bodywork, hull, fuselage, outer casing
    View synonyms
    1. 1.1[mass noun] The process by which matter forms into a concretion.
      • ‘These ground rules become privatized, and those who represent state security become complicit in their support, creating disorder and the absence of clear references for legitimacy and concretion for the general interest.’
      • ‘In its conception and concretion, the Otter Creek feeding facility was a monument to Horace Albright's philosophy of aesthetic conservation.’
      • ‘Strenuous efforts at concretion confront the inevitability of mutability.’
      • ‘In Smithson's work, seriality involves not pure repetition or reiteration (he is not prone to setting up series of identical objects) but rather accretion, concretion, and diminution.’
      • ‘The point of such criticisms is not to recommend a ‘materialist’ poetics supposedly granting direct access to a realm of concretion undisturbed by concepts.’
      • ‘The concern with material concretion begins with Bernstein's title, With Strings.’
      • ‘The areas along fault planes were subjected to a shearing action that produced a pattern of fracturing that is different from the desiccation cracking of a normal septarian concretion.’
      • ‘Yuki's face scrunched up in concretion.’
      • ‘Taken together, they impart a kind of tenuous concretion to the vague concept of nationhood.’

Origin

Mid 16th century: from Latin concretio(n-), from concrescere grow together.

Pronunciation:

concretion

/kənˈkriːʃ(ə)n/