Pronunciation: (mag'mu), [key]
—pl. -mas, -ma•taPronunciation: (-mu-tu). [key]
1. Geol.molten material beneath or within the earth's crust, from which igneous rock is formed.
2. any crude mixture of finely divided mineral or organic matter.
3. Chem., Pharm.a paste composed of solid and liquid matter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.