Branch of physics dealing with sound and its waves (plural noun)
USA Today Rootonym clue · 9 letters · last seen August 30, 2026
Answer
ACOUSTICS
The Root
ACOUmeans “hearing”
In a sentence: Many universities provide sound rooms with superior ACOUSTICS for their music departments.
About this clue
The Rootonym clue “Branch of physics dealing with sound and its waves (plural noun)” has the answer ACOUSTICS (9 letters), built on the root ACOU, which means “hearing”. See the full August 30, 2026 Rootonym puzzle for the other three words, or browse all Rootonym answers.