oe

from The Collaborative International Dictionary of English v.0.48
OE \[OE]\ ([=e]),
   A diphthong, employed in the Latin language, and thence in
   the English language, as the representative of the Greek
   diphthong oi. In many words in common use, e alone stands
   instead of [oe]. Classicists prefer to write the diphthong oe
   separate in Latin words.
   [1913 Webster]
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
OE
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