mag·ma (m g m )n. pl. mag·ma·ta (-mä t) or mag·mas 1. A mixture of finely divided solids with enough liquid to produce a pasty mass. 2. Geology The molten rock material under the earth's crust, from which igneous rock is formed by cooling. 3. Pharmacology A suspension of particles in a liquid, such as milk of magnesia. 4. The residue of fruits after the juice has been expressed; pomace. [Middle English, sediment, dregs, from Latin, from Greek, unguent, from massein, mag-, to knead; see mag- in Indo-European roots.] mag·mat ic (-mt k) adj. |
magma [ˈmægmə]
n pl -mas, -mata [-mətə]
1. (Physics / General Physics) a paste or suspension consisting of a finely divided solid dispersed in a liquid
2. (Earth Sciences / Geological Science) hot molten rock, usually formed in the earth's upper mantle, some of which finds its way into the crust and onto the earth's surface, where it solidifies to form igneous rock
[C15, from Latin: dregs (of an ointment), from Greek: salve made by kneading, from massein to knead]
magmatic [mægˈmætɪk] adj
magmatism n
| magma (mgm) Plural magmata (m g-mät) or magmas The molten rock material that originates under the Earth's crust and forms igneous rock when it has cooled. When magma cools and solidifies beneath the Earth's surface, it forms what are known as intrusive rocks. When it reaches the Earth's surface, it flows out as lava and forms extrusive (or volcanic) rocks. |
magma
a pharmaceutical preparation in which precipitated matter is suspended in a watery substance. See also geology. — magmatic, adj.
See also: Drugs
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