(computing) A program which can covertly transmit itself between computers via networks (especially the Internet) or removable storage such as disks and USB drives, often causing damage to systems and data.

(computer hardware) The conceptual structure around which a given computer is designed. / (computer hardware) The science of computer design.

(dated) A small computer, built around a microprocessor, for use by one person at a time.

(computing, mathematics) a formal theory of computability

An electronic game, especially a game played using a general-purpose computer (as opposed to a game console).

The study of computers and their architecture, languages, and applications, in all aspects, as well as the mathematical structures that relate to computers and computation.

(programming) A language that is used internally by computers, including programming languages, machine languages, query languages, markup languages etc.

(computing) The representation and manipulation of pictorial data by a computer. / (computing) The various technologies used to create and manipulate such pictorial data.

(computing) Any computer that uses ternary logic instead of binary

The process of aggregating the power of several computers to collaboratively run a single computational task in a transparent and coherent way.