And Latin used ae "to transliterate the Greek diphthong αι (alpha iota)" (https://en.wikipedia.org/wiki/%C3%86 https://en.wikipedia.org/wiki/%C3%86) Oe is also

And Latin used ae "to transliterate the Greek diphthong αι (alpha iota)" (https://en.wikipedia.org/wiki/%C3%86 https://en.wikipedia.org/wiki/%C3%86) Oe is also used in the same way I suppose, oestrogen for example comes from οιστρογόνο so in this case oe is transliterating omicron iota. Some more here: https://en.wikipedia.org/wiki/English_words_of_Greek_origin#Written_form_of_Greek_words_in_English https://en.wikipedia.org/wiki/English_words_of_Greek_origin#... I was actually a bit disappointed that she doesn't mention all this in the article, "ae" is not aesthetical (another greek-derived word) ffs, it very often maintains the historical orthography of the word which I feel is very important.