Definition of formation
1 : an act of giving form or shape to something or of taking form : development
2 : something that is formed new word formations
3 : the manner in which a thing is formed : structure the peculiar formation of the heart
4 : a major kind of plant growth (such as forest, grassland, or tundra) characteristic of a broad ecological region
5a : any igneous, sedimentary, or metamorphic rock represented as a unitb : any sedimentary bed or consecutive series of beds sufficiently homogeneous or distinctive to be a unit
6 : an arrangement of a body or group of persons or things in some prescribed manner or for a particular purpose flying in formation
Examples of formation in a Sentence
The book explains the formation of the planets.
The soldiers were marching in formation.
The team ran on the field and lined up in a punt formation.
Recent Examples of formation from the Web
A missing piece of the puzzle is why small and large gas giants do not co-exist around metalliferous stars, for core formation does not obviously preclude a nebula breaking up into gas clumps as well.
Buried in the rock formations of the ocean floor bubbled oil, a product Texaco et al. wanted to extract.
Alderman Juany Garza, who is working on the proposal, said the idea behind the mural was to represent all immigrants and the city's formation with immigrants.
Wolves haven’t appeared on Thrones in pack formation, well, ever.
Hyperbaric oxygen therapy, in theory, works by stimulating the body’s creation of new blood vessels and aiding the formation of new skin around a wound.
And in this, the art of self-packaging, self-marketing—and sometimes even admissions-driven self-formation—
The Fire rolled out a 4-2-3-1 formation for the match.
The group — the men wore military-style uniforms — practically marched in formation.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'formation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of formation
FORMATION Defined for English Language Learners
Definition of formation for English Language Learners
: the act of forming or creating something
: something that is formed or created
: an orderly arrangement or group of people, ships, or airplanes
FORMATION Defined for Kids
Definition of formation for Students
1 : a creation or development of something the formation of good habits
2 : something that is formed or created a cloud formation
3 : an arrangement of something battle formation punt formation
Learn More about formation
See words that rhyme with formation Thesaurus: All synonyms and antonyms for formation Spanish Central: Translation of formation Nglish: Translation of formation for Spanish speakers Britannica English: Translation of formation for Arabic speakers Britannica.com: Encyclopedia article about formation
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