| 1. piece of equipment which can be used with other machines without alteration; device which can be used on or with other computers without being changed (Computers). capable of existing together in harmony; congruous; able to be used with other machines without alteration; able to be used on or with other computers without being changed (Computers). compatiblecom*pati*ble , a. [f., fr. ll. compatibilis, fr. l. compati. see: compassion.] capable of existing in harmony; congruous; suitable; not repugnant; -- usually followed by with. our poets have joined together such qualities as are by nature the most compatible |