Character used in Latin a lot, and still is used in the archaic spellings of some words today. Most of the time, if you spell a word with æ when it doesn't need to be spelled that way, people think you're an uppity bastard.
egyptian -> ægyptian
fairy -> færie
anemia -> anæmia
hemoglobin -> hæmoglobin
hyena -> hyæna
medieval -> mediæval
pedophile -> pædophile
premium -> præmium
eon -> æon
"A mediæval pædophile ate a præmium ægyptian hyæna færie's hæmoglobin æons ago."
Æ/æ is a letter found in Icelandic, norwegian, and other scandinavian languages. It originated from Latin and makes different sounds depending on what language is being spoken.
Icelandic and Latin: pronounced like the english word 'eye'
Norwegian: like english 'a' in 'cat'
Anglo Saxon: like english 'a' in 'cat'
Æternum, latin word for eternity
Used when the last letter of a word is 'a' which is going to be suffixed by 'ed' or any suffixes beginning with 'e'.
"I've karmæd you already, karma whore!"