Formalize (verb)

1. To give a formal or official structure, shape or character to something.
2. To make something official or legally binding.

Origin:

From the latin word "formalis" meaning having to do with form or shape.

Examples:

1. The company is formalizing its policies and procedures to ensure compliance with the new regulations.
2. The government formalized the agreement with the signing of the treaty.
3. They formalized the partnership by signing a contract.
4. The organization formalized its status by incorporating.
5. He formalized the relationship by proposing marriage.