acous-, acou-, acouo-, acoustico-, acouto-, acousti-, -acousia, -acousis, -acoustical, acu-, -acusis-, -acusia

(Greek: akoustikos, to hear, hearing; to listen, listening)

acoustimeter (s) (noun), acoustimeters (pl)
A portable electronic device that measures noise levels; especially, those of traffic: "The traffic personnel who were responsible for monitoring vehicular noise in residential areas of the city used acoustimeters to help them with their duties."
acoustoelectric effect, electroacoustic effect (s) (noun); acoustoelectric effects, electroacoustic effects (pl)
The generation of a DC voltage in a crystal or in a metallic material, resulting from sound waves traveling along the surface of metals: The sound engineering students were experimenting with the development of the acoustoelectric effects by using the different external tops of iron or steel surfaces.
acoustoelectronics (s) (noun) (a plural form used as a singular)
The use of microwave sound waves traveling through specialized solids: Acoustoelectronics is usually done with crystals or metals that react when bombarded with the noise and the processing of such vibrations.
acoustogram, acoustigram (s) (noun); acoustograms, acoustigrams (pl)
The graphic tracing of the curves, delineated in frequencies per second and decibel levels, of sounds produced by motion of a body joint: "When applied to a knee joint, an acoustogram will show the sound of the moving semilunar cartilages, the moving contact between the articular surfaces of the femur and tibia, and the circulation of the synovia."
acousto-optic (s) (noun), acousto-optics (pl)
The science and technology of the interactions between sound waves and light waves passing through solid materials; especially, as applied to the modulation and deflection of laser beams by ultrasonic waves; important in laser and holographic technologies: "Samuel Waters was intent on perfecting a system of acousto-optics to enable him to expand his holographic business which printed passes for the local bus system."
acousto-optical (adjective), more acousto-optical, most acousto-optical
Characteristic of the technology for the study of light and sound waves through solid material: "John noted that he had just finished reading an interesting article about the acousto-optical properties of certain materials."
acousto-optically (adverb), more acousto-optically, most acousto-optically
Relating to the technological study of sound and light waves and various kinds of materials: "Zarah's interest in the latest acousto-optically advanced technologies in holographic photography helped her choose the university where she could continue to prepare herself for this specialized field of work."
acoutometer (s) (noun), acoutometers (pl)
An instrument for measuring the various levels of sounds: "Upon completing her degree to qualify as an acoustician, Dr. Sally Harcourt purchased an acoutometer to use in her office."
acusis [acousia] (s) (noun), acuses (pl)
1. The ability to perceive sounds normally or having normal hearing: "Gladys was glad to get the doctor's report that she had acusis and did not need an acousticon or hearing aid."
2. A suffix that is used in combinations to denote specific kinds of hearing that have special applications, as in presbyacusis, hypoacusis, etc.: "The use of acusis in the diagnostic report alerted the doctor to test for a hearing loss with Mrs. Salizar."
aeroacoustics (s) (noun) (a plural used as a singular)
The study of sound transmission through the air; especially, in terms of the effects of environmental noise from machines, vehicles, aircraft, etc.: "The planning of a new airport near the city involved a comprehensive aeroacoustics to determine the impact of the sounds of the aircraft on living conditions for people who are living in the area."
amblyacousia (s) (noun), amblyacousias (pl)
A dullness or loss of hearing: "Because of his progressive amblyacousia, Brett always sat in a front seat of the auditorium so he could hear the speakers or singers, etc."
amblyacusis (s) (noun), amblyacuses (pl)
Difficulty in hearing: "The doctor assured Mr. Zeeb that the amblyacusis which he was experiencing was the result of his having worked so often in very noisy places and was not just because of his old age."
anacousia (s) (noun), anacousias (pl)
Unable to hear; deaf: The famous composer, Beethoven, suffered from acute anacousia late in his life and musical career.
anacousis (s) (noun), anacouses (pl)
The total loss or absence of the ability to perceive sounds: Anacousis implies a handicap known as deafness that is sufficiently severe as to prevent verbal communication through the ears; unless there is some form of amplification.
anacoustic (adjective), more anacoustic, most anacoustic
Descriptive of someone or something having a diminished or a complete loss of hearing: The veterinarian observed that Rufus was the most anacoustic cat that she has ever seen.

If you would like to take a self-scoring quiz over many of the words in this unit, then click on this Hearing Quiz link so you can see how much you know about some of these “acous-, acou-” words.

Related "hear, hearing; listen, listening" units: audio-; ausculto-.