Consensus Ad Idem Definition: Latin: an agreement - a meeting of the minds between the parties where all understand the commitments made by each. A basic requirement for a contract. Related Terms: Meeting of the Minds, Acceptance Latin term meaning an agreement, a meeting of the minds between the parties where all understand and have accepted the contractual commitments made by each other, respectively. This is a basic requirement for each contract. See the extensive discussion on this in Part 3 of Duhaime's Contract Law. Categories & Topics: Contract Law Dictionary Dictionary of Latin Law Terms Find you are constantly looking up definitions? Try our search provider (works in most modern browsers) If you find an error or omission in Duhaime's Legal Dictionary, or if you have legal term suggestion, we'd love to hear from you!