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 (as forest, grassland, or tundra) characteristic of a broad ecological region
5 a : any igneous, sedimentary, or metamorphic rock represented as a unit b : 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.
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>
Seen and Heard
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