The study of interaction between people and computers.

(medicine) A medical imaging process involving the use of multiple X-ray images to produce a three dimensional image of internal organs. / (medicine) A scan produced by this technique.

A temporary condition resulting from focusing the eyes on a computer display for extended periods of time. Symptoms include headaches, blurry vision, and difficulty in refocusing.

(computer science) A particular modal logic of branching time with operators "next", "globally", "finally" or "eventually", "until", and "weak until".

(computing) A standard interface and command set for transferring data between devices on a bus.