Popular word puzzle lore has it that there are only two relatively common words having the five vowels AEIOU appearing once each and in order: ABSTEMIOUS and FACETIOUS. Over a dozen other such words and terms were logged in Language on Vacation and pre-1998 issue of Word Ways. The number of such AEIOU words jumped dramatically in February 1998, though, with the publication of SUsan Thorpe's article, "AEIOU in Order". Susan's article brought together the previously published AEIOU words, many new finds in Webster's Second Edition and the Oxford English Dictionary, plus many culled from the pages of biological references. Susan's article pulled together a total of 145 words.
"AEIOU In Order - Again!,"
Word Ways: Vol. 37
, Article 17.
Available at: https://digitalcommons.butler.edu/wordways/vol37/iss1/17