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British Dictionary definitions for magma. magma. noun plural-mas or-mata ... 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.


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Medical Definition of magma 1 : a crude mixture of mineral or organic matter in the state of a thin paste 2 : a suspension of a large amount of precipitated material (as in milk of magnesia) in a small volume of a watery vehicle


Magma (from Ancient Greek μάγμα (mágma) meaning "thick unguent") is the molten or semi-molten natural material from which all igneous rocks are derived. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites.


Definition of magma from the Collins English Dictionary. Sentences and clauses. A clause is a group of words which contains a verb. The verb in a clause can be finite Use this pan for the pasta. He missed the turnoff. or non-finite. To cook pasta, always use a large pan....


magma [mag´mah] 1. a thick, viscous, aqueous suspension of finely divided, insoluble, inorganic material. 2. a thin, pastelike substance composed of organic material. mag·ma (mag'mă), 1. A soft mass left after extraction of the active principles. 2. A salve or thick paste. [G. a soft mass or salve, fr. massō, to knead] magma /mag·ma/ (mag´mah) 1 ...


Definition of magma - hot fluid or semi-fluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling


Although lava and magma are often used interchangeably, technically magma is the name for the hot molten rock (mixed with gases and mineral crystals) that collects in chambers beneath the Earth's crust. Once the magma breaks through the Earth's surface and flows down the volcano, you can call it lava.


Examples from literature. Sometimes, the magma below a volcano becomes even hotter and moves towards the top. Suddenly, the top of the volcano breaks open, and thousands of kilograms of boiling magma and ash fly up into the air.


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.