15-Letter Words Matching _______N__R____

There are 18 15-letter words that match _______N__R____. 3 are common words, such as GASTROENTERITIS and GEOENGINEERINGS. A rarer one is VIDEOCONFERENCE. 6 words contain a doubled letter.

Full list 18

gastroenteritisgeoengineeringsmountaineeringsbioengineeringsincommensurableinterconversioninterpenetratedinterpenetratespithecanthropusultrasonographyantipornographyincommensurablyinterconvertingnonengineeringsroentgenographyrumormongeringssemipornographyvideoconference

About this list

Words
18 (3 common words)
Common example
gastroenteritis
Rare example
videoconference
Doubled letters
6
Ending in S
8

Questions

How many 15-letter words matching _______n__r____ are there?

18. 3 of them are common words.

What is a common example?

GASTROENTERITIS is among the common words in this set.