(physics) A wave of fluctuating temperature or entropy propagated in the superfluid phase of liquid helium

An artificially created or enhanced sound, used to accompany the action of a dramatic production, such as a film, play or video game

To hold forth about something in an opinionated manner. / (military) Command instructing a person to speak up or acknowledge something.

(physics) The energy present in a sound wave

(music) The open chamber (resonator) of a stringed musical instrument, which intensifies its tone.

plural of sound effect

plural of sound barrier

(transitive) To question and listen attentively in order to discover a person's opinion, intent, or preference, especially by using indirect conversational remarks.

plural of sound change

(phonology) Any process of language change that affects pronunciation (phonetic change) or sound system structures (phonological change)