magma

noun mag·ma \ ˈmag-mə \
Updated on: 9 Nov 2017

Definition of magma

1 archaic :dregs, sediment
2 :a thin pasty suspension (as of a precipitate in water)
3 :molten rock material within the earth from which igneous rock results by cooling

magmatic

play \mag-ˈma-tik\ adjective

Recent Examples of magma from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magma.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of magma

Middle English, from Latin magmat-, magma, from Greek, thick unguent, from massein to knead — more at mingle


MAGMA Defined for English Language Learners

magma

noun

Definition of magma for English Language Learners

  • : hot liquid rock below the surface of the Earth


MAGMA Defined for Kids

magma

noun mag·ma \ ˈmag-mə \

Definition of magma for Students

:molten rock within the earth

Medical Dictionary

magma

noun mag·ma \ ˈmag-mə \

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

Learn More about magma


Seen and Heard

What made you want to look up magma? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to buzz or drone

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!