Sense file
How the sense moved
The archive follows the dated record first, then reads the social or rhetorical pressure that hardened, softened, narrowed, or reversed the word.
Older meaning
A reflected sound; also linked to the mythic figure Echo.
Modern meaning
A repeated sound, idea, or signal.
Research lens
The archive uses this entry as a compact map, not a complete monograph.
Meaning trail
Mythic root
Echo
A figure tied to repetition and loss of voice.
Older sense
reflected sound
Acoustics became the dominant meaning.
Now
repeated sound or idea
Media and rhetoric stretched the metaphor wider.