- The definition of magma is the molten rock material under the Earth's crust or a suspension of particles in a liquid.
- An example of magma is what comes out of a volcano.
- An example of magma is a mixture of water with salt particles hanging in it.
Magma flowing from a volcano.
- a pasty mixture of crude mineral or organic matter
- liquid or molten rock deep in the earth, which on cooling solidifies to produce igneous rock
- Pharmacy a suspension of precipitated matter in a watery substance
Origin of magmaClassical Latin the dregs of an unguent ; from Classical Greek ; from massein, to knead ; from Indo-European base an unverified form menk-, to knead, crush from source mingle
nounpl. mag·ma·ta or mag·mas
- Geology The molten rock material under the earth's crust, from which igneous rock is formed by cooling.
- Pharmacology A suspension of particles in a liquid, such as milk of magnesia.
- A mixture of finely divided solids with enough liquid to produce a pasty mass.
- Archaic The residue of fruits after the juice has been expressed; pomace.
Origin of magmaMiddle English, sediment, dregs, from Latin, from Greek, unguent, from massein, mag-, to knead; see mag- in Indo-European roots.
From Ancient Greek μάγμα (magma, “paste”).