Webster's English Dictionary

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magma

mag.ma \'mag-m*\ \mag-'mat-ik\ n [L magmat-, magma, fr. Gk, thick unguent, 
   fr. massein to knea]d - more at MINGLE archaic  1: DREGS, SEDIMENT  2: a 
   thin pasty suspension (as of a precipitate in water)  3: molten rock 
   material within the earth from which an igneous rock results  by cooling - 
   mag.mat.ic aj