You searched for:
“acoustic shadow”
A space into which sounds do not enter because of the refraction of sound waves: Some acoustic shadows take place immediately behind a large object that obstructs the audible waves.
This entry is located in the following unit:
acous-, acou-, acouo-, acoustico-, acouto-, acousti-, -acousia, -acousis, -acoustical, acu-, -acusis-, -acusia
(page 2)