expression, godan verb (-ru)
become; turn into; amount to; be
Formal or literary expression meaning 'to become' or 'to be'. Often used in definitions, formal statements, or to indicate a result or role. More emphatic and stiffer than になる.
彼は後に大統領となった。
He later became president.
この法律の目的は、国民の安全を守ることとなる。
The purpose of this law is to protect the safety of the citizens.