Click on the elements of interest for more details,
 or make a new query .
The numbers that are shown in the parentheses indicate how
many of your word queries appear in each category.
- acous-, -acoustical words: acusis to telacousis, part 2 of 2   (one matching result)
 
- echo-, ech- (Greek: sound, noise; especially a returned sound; repetition, imitation)  (one matching result)