ALL meanings of anacoustic
an·a·cous·tic
A a - adjective anacoustic unable to support the propagation of sound; soundless 3
- adjective anacoustic of or relating to the upper portion of the earth's atmosphere and to interplanetary space, where sound cannot be transmitted because molecules are too far apart to serve as a transmitting medium. 1
- noun anacoustic Anechoic, soundless. 1
- adjective anacoustic (physics) Describing the upper reaches of the atmosphere, and of space, in which the concentration of molecules is too small to support the propagation of sound. 0