1. marked or signed with one’s initials
Usage: past tense and past participle of ‘initial’

Examples

• She initialled each page of the contract before signing.
• The document was initialled by both parties.
• He initialled the memo to show he had read it.
• The supervisor initialled the timesheet for approval.
• All changes to the agreement must be initialled.
• The nurse initialled the patient’s chart after each medication.