15-Letter Words Matching ________R___O__

There are 31 15-letter words that match ________R___O__. 7 are common words, such as ADMINISTRATIONS and CONGLOMERATIONS. A rarer one is UNDERNUTRITIONS. 3 words contain a doubled letter.

Full list 31

Common words

administrationsconglomerationscontemporaneousdisintegrationsnoncooperationsreconsecrationstransmigrationschoriocarcinomapassifloraceousphotomicroscopesclerodermatousultramicroscope
administrationsconglomerationscontemporaneousdisintegrationsnoncooperationsreconsecrationstransmigrationschoriocarcinomapassifloraceousphotomicroscopesclerodermatousultramicroscopeantituberculouscommensurationsconcelebrationsdeconsecrationsdefenestrationsechinodermatoushyperexcretionshypersecretionsneurosecretionsnoncelebrationsoverdecorationsoversaturationspreponderationsredintegrationsreinvigorationsreregistrationssupernutritionsteratocarcinomaundernutritions

About this list

Words
31 (7 common words)
Common example
administrations
Rare example
undernutritions
Doubled letters
3
Ending in S
27

Questions

How many 15-letter words matching ________r___o__ are there?

31. 7 of them are common words.

What is a common example?

ADMINISTRATIONS is among the common words in this set.