Category: A
-
Acoustic basis
The foundation of phonetic language. The is used to determine the variations in language pronunciations.
-
Acoustic method
Developed by Max A. Foldstein, a method of teaching the deaf. Speech and speech under-standing are achieved by training the auditory and tactile senses to recognize sound vibrations produced by the voice or sonorous instruments.
-
Acoustic
Pertaining to the sense of hearing or to the science that is concerned with this sense. The science of sound. Relating to the sound or hearning.
-
Acoumeter
An instrument for testing hearing. The Politzer produces a clicking tone that can be heard up to about 45 feet.
-
Acouasm
A false perception of some sounds such as ringing or hissing.
-
Acoelomate
In biology, without a body cavity or coelom.
-
Acini
The milk-producing glands in the breast.
-
Acid rain
Rain containing nitric and sulfuric acid, formed when nitrogen and sulfur oxides from motor vehicles and coal-burning power plants and factories react with moisture in the atmosphere. Rain that contains nitric acid, sulfuric acid, or both.
-
Acid-base blance
The ratio of acidity and alkalinity of body fluids.
-
Achromatin
The substance of the cell nucleus that is not readily stained by staining agents. The weakly staining nucleoplasm of a cell nucleus.