What is the meaning of Latency?

Concealment; the state of being latent; the state of being hidden.

Dormancy; the state of being inactive.

A delay, an interval between the initiation of something and the occurrence.

The time delay between a request for data or action and the beginning of the response or execution, often measured to assess system performance.

The delay between a stimulus and the response it triggers in an organism.

A stage in Sigmund Freud's psychoanalytic theory of the psychosexual development of children where children become asexual until their sexual desires come back at puberty.

Source: wiktionary.org