pres·sure / pr ɛʃ ər / Pronunciation Key - Show Spelled Pronunciation [ presh -er ] Pronunciation Key - Show IPA Pronunciation noun, verb, -sured, -sur·ing. –noun 1. the exertion of force upon a surface by an object, fluid, etc., in contact with it: the pressure of earth against a wall. 2. Physics . force per unit area. Symbol: P Compare stress (def. 6) . 3. Meteorology . atmospheric pressure. 4. Electricity . electromotive force. 5. the state of being pressed or compressed. 6. harassment; oppression...