15-Letter Words Matching ___R_______O___

There are 12 15-letter words that match ___R_______O___. 3 are common words, such as IMPROVISATIONAL and MICROELECTRONIC. A rarer one is ULTRAMICROTOMES. 1 words contain a doubled letter.

Full list 12

improvisationalmicroelectronicnitrocelluloseshydrocortisonesintrospectionalmicroelectrodesmicrometeoroidsneuropathologicsporangiophoresthyrocalcitoninultramarathonerultramicrotomes

About this list

Words
12 (3 common words)
Common example
improvisational
Rare example
ultramicrotomes
Doubled letters
1
Ending in S
6

Questions

How many 15-letter words matching ___r_______o___ are there?

12. 3 of them are common words.

What is a common example?

IMPROVISATIONAL is among the common words in this set.