• Crustal

    Pronunciation

    • UK IPA: /ˈkɹʌstÉ™l/

    Origin

    From crust + -al.

    Full definition of crustal

    Adjective

    crustal

    1. Of, pertaining to, or forming a crust, especially the crust of the Earth or other planet etc.
      • 2003, Bill Bryson, A Short History of Nearly Everything, BCA, p. 189:The hope was to lower a drill through over 4,000 metres of Pacific Ocean water off the coast of Mexico and drill some 5,000 metres through relatively thin crustal rock.

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