The word "echo" is called "echo" because it comes from the Greek word ἠχώ (ēchō), which itself derives from ἦχος (echos) meaning "sound."
Here's a breakdown:
- Origin: The term originates from ancient Greek.
- Greek Words:
- ἦχος (echos) - meaning "sound".
- ἠχώ (ēchō) - The noun form of "sound." This is closer to the English word "echo."
- Greek Mythology: Echo was also the name of a mountain nymph in Greek mythology. She was cursed to only repeat the last words spoken to her. This myth further cemented the association of the word with the phenomenon of reflected sound.
Therefore, the term "echo" for the reflected sound phenomenon directly borrows from the Greek understanding and naming of sound itself, later influenced by the mythological figure of Echo who could only repeat sounds.