- æ
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æ [ē, i, e]n.〚L aetatis〛1. a ligature used to represent a diphthong in some Latin words, equivalent to ai in Greek, usually written æ or replaced by e in modern spelling of derived English words, as in demon (daemon), ether (aether), etc. and pronounced (ē, i, or e)2. an Old English ligature representing a low front unrounded vowel like that in Modern English hat: see ASH2 (n. 3)3. a character in the International Phonetic Alphabet and some other transcription systems, representing this low front unrounded vowel
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Universalium. 2010.