Etymology of the English word asthenosphere
the English word
asthenosphereusing the English prefix
astheno-derived from the Greek word
asthenes, ἀσθενής (strengthless (in various applications, literal, figurative and moral))
derived from the Greek word
sthenos, σϑένος, στενός (strength; narrow (from obstacles standing close about))
derived from the Proto-Indo-European root
*segh-derived from the Greek word
sphereDate
The earliest known usage of asthenosphere in English dates from the 20th century.
Usage
Word found in Modern English
