magma

Etymology

From Ancient Greek μάγμα (mágma, “paste”).

noun

  1. (geology) The molten matter within the earth, the source of the material of lava flows, dikes of eruptive rocks, etc.
  2. (mathematics) A basic algebraic structure consisting of a set equipped with a single binary operation.
  3. Any soft doughy mass.
  4. The residuum after expressing the juice from fruits.

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