A more thorough explanation:

Definition: Notarial is an adjective that refers to the official acts of a notary public. A notary public is a person authorized by a state to perform official acts in commercial matters, such as certifying documents, administering oaths, attesting to the authenticity of signatures, and protesting negotiable instruments.

Examples:

• A notarial seal is a stamp or embossed emblem used by a notary public to authenticate a document.
• John needed to have his signature notarized by a notary public in order to finalize the sale of his car.
• The notarial services provided by a notary public are important for ensuring the legality and authenticity of various types of documents.

The examples illustrate how notarial relates to the official acts of a notary public. A notary public is authorized by the state to perform various official acts, such as certifying documents and attesting to the authenticity of signatures. These acts are important for ensuring the legality and authenticity of various types of documents, such as contracts, deeds, and wills.