[491] Echo, griech., s. Wiederhall.
Brockhaus-1809: Echo
Brockhaus-1837: Echo
Brockhaus-1911: Echo [2] · Echo
DamenConvLex-1834: Echo (Schall) · Echo (Mythologie)
Hederich-1770: Echo
Lueger-1904: Echo
Meyers-1905: Echo [2] · Echo [1] · Echo City
Pierer-1857: Echo [2] · Echo [1]
Vollmer-1874: Echo