. era;      in the first century B. C.;     in the first century A. D.
. . erection.
. ersatz.
. ( .  . ) erythrocites.
. . oriel (window).
. erosion;~  soil erosion.
 sensuality .
|, ~ erotic.
. erotomaniac, sexual maniac.
. erotomania.
well-read, well-informed, erudite.
. erudition, learning.
