Definition of "magmatic"

magmatic

/maɡˈmatɪk/

adjective
not comparable
1. Pertaining to magma or magmatism.
  Quotations
  The magmatic masses are moving at shallow depth in the western part of the Gulf of Pozzuoli.
  2004, Richard Fortey, The Earth, Folio Society, published 2011, page 26
noun
plural magmatics
1. A rock formed from magma