Whether the tonsure is an Order?

Objections

Objection 1 : It would seem that the tonsure is an Order. For in the acts of the Church the spiritual corresponds to the corporal. Now the tonsure is a corporal sign employed by the Church. Therefore seemingly there is some interior signification corresponding thereto; so that a person receives a character when he receives the tonsure, and consequently the latter is an Order.
Objection 2 : Further, just as Confirmation and the other Orders are given by a bishop alone, so is the tonsure. Now a character is imprinted in Confirmation, and the other Orders. Therefore one is imprinted likewise in receiving the tonsure. Therefore the same conclusion follows.
Objection 3 : Further, Order denotes a degree of dignity. Now a cleric by the very fact of being a cleric is placed on a degree above the people. Therefore the tonsure by which he is made a cleric is an Order.