com·po·si·tion 
/ˌkɑ:mpəˈzɪʃən/ noun
plural com·po·si·tions /ˌkɑ:mpəˈzɪʃən/ noun 1 [noncount] : the way in which something is put together or arranged
▪ the painting's unique composition : the combination of parts or elements that make up something ▪ Each rock has a slightly different composition. [=makeup] ▪ the changing composition of the country's population ▪ the composition of a chemical compound 2 [count] : a piece of writing
▪ Is this poem an original composition? [=did you write this poem yourself?] ; especially : a brief essay written as a school assignment
▪ The teacher reminded us to hand in our compositions at the end of class. 3 [count] : a written piece of music and especially one that is very long or complex
▪ a famous classical composition 4 [noncount] : the art or process of writing words or music
▪ She studies musical theory and composition.
▪ the painting's unique composition : the combination of parts or elements that make up something ▪ Each rock has a slightly different composition. [=makeup] ▪ the changing composition of the country's population ▪ the composition of a chemical compound
▪ Is this poem an original composition? [=did you write this poem yourself?] ; especially : a brief essay written as a school assignment
▪ The teacher reminded us to hand in our compositions at the end of class.
▪ a famous classical composition
▪ She studies musical theory and composition.
