- (transitive, law) To become legally committed to.
- One must be of legal age to enter into a contract.
- (transitive) To engage in a formal or informal process.
- The country entered into peace talks with the militants.
- An indulgent playmate, Grannie would lay aside the long scratchy-looking letter she was writing (heavily crossed ‘to save notepaper’) and enter into the delightful pastime of ‘a chicken from Mr Whiteley's’.
- (transitive) To be relevant; to be a contributing factor.
- He did the crime and will go to jail - the fact that he did not know it was illegal does not enter into it.
enter into — see penetrate
to engage in a formal or informal process
to be relevant; to be a contributing factor