To make firm or firmer; to add strength to; to establish; as, health is confirmed by exercise.

To strengthen in judgment or purpose.

establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant"

strengthen or make more firm; "The witnesses confirmed the victim's account"

To give new assurance of the truth of; to render certain; to verify; to corroborate; as, to confirm a rumor.

To render valid by formal assent; to complete by a necessary sanction; to ratify; as, to confirm the appoinment of an official; the Senate confirms a treaty.

as of a person to a position; "The Senate confirmed the President's candidate for Secretary of Defense"

An acknowledgment sent to a mutual fund shareholder after each account transaction (purchase, sale, etc.) that reflects the details of that transaction.

Is a ratification of an order. Usually it is in written form, however verbal confirms must be subsequently validated by a written record of the transaction. See confirmation.

Whenever you buy or sell an investment, you should receive confirmation, or a "confirm," that acknowledges and reports the details of your transaction.