An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) Molten → rock material that occurs below Earth's surface.
2) Molten material both below and on top of the surface of a → planet.

From L. magma "dregs of an ointment," from Gk. magma "an ointment," from root of massein "to knead, mold."

Mâgma, loanword from Fr.

A large cavity within the Earth's → crust containing → magma. When a → vent is opened to the surface, magma is extruded onto the surface as → lava.

→ magma; → chamber.