Source : Webster's Revised Unabridged Dictionary (1913)

Magma \Mag"ma\, n. [L., fr. Gr. ?, fr. ? to squeeze, knead.]
   1. Any crude mixture of mineral or organic matters in the
      state of a thin paste. --Ure.

   2. (Med.)
      (a) A thick residuum obtained from certain substances
          after the fluid parts are expressed from them; the
          grounds which remain after treating a substance with
          any menstruum, as water or alcohol.
      (b) A salve or confection of thick consistency.
          --Dunglison.

Source : WordNet®

magma
     n : molten rock in the earth's crust
     [also: {magmata} (pl)]

Source : Free On-Line Dictionary of Computing

Magma
     
         A program used for heavy duty
        algebraic computation in many branches of mathematics.  Magma,
        developed by John Cannon and associates at the University of
        Sydney, succeeded {Cayley}.  It runs at several hundred sites.
     
        E-mail: .
     
        {Home (http://www.maths.usyd.edu.au:8000/u/magma/)}.
     
        [W. Bosma, J. Cannon and C. Playoust, The Magma algebra system
        I: The user language, J. Symb. Comp., 24, 3/4, 1997, 235-265].
     
        (2000-12-21)