There exist thousands of words which embody each of the five vowels A.E.I.O. and U once only, in any order (AEIOU words). In "AEIOU Words in Biology" in the November 1993 and February 1994 issues of Word Ways. I presented various categories of these AEIOU words. Since that time I Have been collecting examples which fall into the category entitled AEIOUS.
"AEIOU In Order,"
Word Ways: Vol. 31
, Article 9.
Available at: http://digitalcommons.butler.edu/wordways/vol31/iss1/9