formation
nounUK /fɔːˈmeɪʃən/
US /fɔːrˈmeɪʃən/
The way something is made or put together.
The teacher explained the formation of clouds in science class.
RELATED WORDS
OTHER MEANINGS
2. A group of people or things that are arranged in a special way.
The birds flew in a V formation across the sky.
3. The act of starting a new group or organization.
The formation of the new club happened last spring.
4. A rock or layer of earth that formed over a long time.
The hikers saw an unusual rock formation on the mountain.