What does sounder mean?
A device used to locate the source of a sound, or a person or thing that makes a sound. A device used to measure the depth of water by emitting a sound and measuring the time it takes for the sound to bounce back.
Example
"The sailor used a sounder to measure the depth of the ocean before dropping anchor."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.