Definition found in The Collaborative International Dictionary of English v.0.44

AE \[AE]\ or Ae \Ae\
   A diphthong in the Latin language; used also by the Saxon
   writers. It answers to the Gr. ai. The Anglo-Saxon short [ae]
   was generally replaced by a, the long [=ae] by e or ee. In
   derivatives from Latin words with ae, it is mostly superseded
   by e. For most words found with this initial combination, the
   reader will therefore search under the letter E.
   [1913 Webster] ||

Here are a few random words you may find interesting:

• wonder
• aspen
• unexplained
• hydromedusa
• gaged