<p><strong>Adjective</strong></p><ul><li>capable of existing or living together in harmony: the most compatible married couple I know.</li><li>able to exist together with something else: Prejudice is not compatible with true religion.</li><li>consistent; congruent (often followed by with): His claims are not compatible with the facts.</li><li>Botany: (of two or more different plant species or cultivars) capable of cross-pollinating: These varieties of apple trees are quite distinct one from the other, but they are compatible, with each one’s pollen fertilizing the other’s flowers.</li><li>Computers: (of software) capable of being run on another computer without change.</li><li>(of hardware) capable of being connected to another device without the use of special equipment or software.</li><li>Electronics: (of a device, signal, etc.) capable of being used with equipment in a system without the need for special modification or conversion.</li><li>noting a system of television in which color broadcasts can be received on ordinary sets in black and white.</li></ul><p><strong>Noun</strong></p><ul><li>something, as a machine or piece of electronic equipment, that is designed to perform the same tasks as another, often in the same way and using virtually identical parts, programmed instructions, etc.: Software written for one computer will probably run on its close compatibles.</li></ul>