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intratelluric

American  
[in-truh-tuh-loor-ik] / ˌɪn trə təˈlʊər ɪk /

adjective

  1. Geology. located in, taking place in, or resulting from action beneath the lithosphere.

  2. Petrography. noting or pertaining to crystallization of magma that begins previous to its extrusion on the surface.


intratelluric British  
/ ˌɪntrətəˈljʊərɪk /

adjective

  1. (of rocks and their constituents, processes, etc) formed or occurring below the surface of the earth

  2. denoting crystals formed at depth before magma erupted at the earth's surface

  3. denoting the period during which crystallization took place

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of intratelluric

First recorded in 1885–90; intra- + telluric 1