| Term | Definition |
| audible | (adj.) loud enough to be heard or capable of being heard |
| audition | (n.) a hearing to test the abilities of a speaker, actor, or musician; a tryout |
| auditory | (adj.) of or relating to the process of hearing |
| homophone | (n.) one of two or more words pronounced alike, but different in meaning or spelling or derivation (Ex. to, too, two) |
| phonograph | (n.) a machine which produces sound from tracings made on a flat disk, or record |
| sonar | (n.) a system of using sound waves to locate objects underwater |
| sonnet | (n.) a poem or verse form consisting of 14 lines with a fixed rhyme scheme |
| sonorous | (adj.) capable of emitting a sound with a rich, full quality; resonant sound |
| symphony | (n.) a complex musical composition for an orchestra; harmony of sounds |
| unison | (n.) sounding the same note or tone at the same time; occurring at the same time; agreement |