Synonyms for the term "sonar echo" include acoustic reflection, sound bounce, reverberation, acoustic return, and echo signal. Sonar is a technology used by boats and submarines to navigate and locate objects underwater. It involves emitting sound waves and detecting their echoes to determine the distance and position of objects in the water. The term "sonar echo" refers to the reflection of sound waves back to the receiver after hitting an object. Identifying synonyms for scientific terms can help to expand one's vocabulary and understanding of a subject, as well as provide alternative ways of expressing the same idea.