13-Letter Words Matching _____N_____U_

There are 20 13-letter words that match _____N_____U_. 6 are common words, such as CARBONIFEROUS and DISCONTINUOUS. A rarer one is STOLONIFEROUS. 3 words contain a doubled letter.

Full list 20

carboniferousdiscontinuousinstantaneousnoncontagiousnoncontinuoustyrannosaurusaluminiferousbignoniaceouscarcinomatousconsentaneousfrumentaceousgraminivorousjuglandaceousnoncontiguoussuccinctoriumtintinnabulumcavernicolousnonmonogamousoveringeniousstoloniferous

About this list

Words
20 (6 common words)
Common example
carboniferous
Rare example
stoloniferous
Doubled letters
3
Ending in S
18

Questions

How many 13-letter words matching _____n_____u_ are there?

20. 6 of them are common words.

What is a common example?

CARBONIFEROUS is among the common words in this set.