This closer has a very short delay time of less than 3 seconds.

The correct spelling is "hesitation" (a short delay before acting).

Short in circuit wiring or circuit overloaded.

A firm would delay the payment of Accounts Payable because they could use the money to invest in short term investments and earn some return

The delay occurs within the fibres of the AV node. It is important because it allows the atria to complete their contraction and empty their blood into the ventricles before the ventricles contract. There is a short delay (1 m/second) in transmission of the impulse to the ventricles.