(1) (v.) To save a particular state of a program. The term capture often refers to saving the information currently displayed on a display screen. You can capture the screen to a printer or to a file. The act of saving a display screen is called a screen capture.
(2)(n.) Video capture refers to storing video images in a computer.
(4) (n.) In a biometric security system, the process of acquiring a biometric sample from a user.