11-Letter Words Matching ____O___U__

There are 22 11-letter words that match ____O___U__. 8 are common words, such as AUDIOVISUAL and COLLOQUIUMS. A rarer one is TIBIOFIBULA. 6 words contain a doubled letter.

Full list 22

audiovisualcolloquiumsconsortiumscottonmouthcustomhouseopprobriumspetrolatumsschoolhousecirrocumulihydromedusaprimordiumsrapporteursbiomoleculecolporteursdouroucoulimicrotubulenoncompoundphotoreduceseaborgiumssociosexualstomodaeumstibiofibula

About this list

Words
22 (8 common words)
Common example
audiovisual
Rare example
tibiofibula
Doubled letters
6
Ending in S
9

Questions

How many 11-letter words matching ____o___u__ are there?

22. 8 of them are common words.

What is a common example?

AUDIOVISUAL is among the common words in this set.