A contraction stress test is a test performed during pregnancy to verify whether or not the unborn babyâs heart is strong enough to withstand labor. It uses drugs or nipple stimulation to make the uterus temporarily contract in order to replicate labor contractions.
Graphical user interface. A graphical user interface (or GUI, often pronounced gooey), is a particular case of user interface for interacting with a computer which employs graphical images and widgets in addition to text to represent the information and actions available to the user.
Definition of interface for English Language Learners. : 1  the place or area at which different things meet and communicate with or affect each other. : 2  a system that is used for operating a computer : a system that controls the way information is shown to a computer user and the way the user is able to work with the computer.