An expression meaning 'to consist of' or 'to be composed of' (i.e., formed from specified parts); commonly used in writing and descriptions and roughly equivalent to 'be composed of'.
このチームは5人からなる。
This team consists of five people.
組織は管理職と一般職から成る。
The organization is made up of managers and general staff.
文章は導入部・本論・結論から成ることが多い。
A text often consists of an introduction, main body, and conclusion.