English
echogenous
From echo- + -genous.
Formed from echo- + -genous
Proto-Indo-European *sweh₂gʰ- ‘to sound’
Proto-Hellenic *wākʰā́
Ancient Greek ἠχή ‘sound’
Ancient Greek ἠχώ ‘echo, protracted sound’
English echo-
Today it means
adj echogenic.
Language periods are conventional ranges, not dates for this word.
Etymograph / echogenous