response time

(biology, medicine) The period of time between the application of a stimulus and the associated response from a cell or tissue

The time taken for a person (or human-controlled system) to respond to a request

(electronics) The time taken for the display of an instrument to move to a new value following a step change

(computing) The period of time between a request for a service and the associated response; typically the request is caused by a user at a terminal hitting the return key, and the response is displayed on a screen