SOUND By N., Sam M.S. - 2 the variation in pressure over time in medium that is elastic like air and water. It is not always audible. Also, have a look on range of audibility. SOUND: "There are sounds that we cannot hear." Related Psychology Terms HEARING (AUDITION) AUDITORY SPACE PERCEPTIO LANGUAGE (Psycholinguistics) HEARING AER HUNGER LYSERGIC ACID (LSD) ABSOLUTE THRESHOLD VENTILATION CONDITIONS STIMULUS (literally “goad”) ATARACTIC (Atanndc) Cite this page: N., Sam M.S., "SOUND," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/sound/ (accessed November 27, 2021).