11-Letter Words Ending in TIS

There are 17 11-letter words that end in TIS. 3 are common words, such as PERITONITIS and PHARYNGITIS. A rarer one is PNEUMONITIS. In this set, I is the most frequent open letter (15 words). 1 words contain a doubled letter.

Full list 17

peritonitispharyngitistonsillitisblepharitischoroiditisesophagitismastoiditismyocarditisperiostitisprostatitisradiculitissalpingitisspermacetisspondylitisstephanotisthyroiditispneumonitis

About this list

Words
17 (3 common words)
Common example
peritonitis
Rare example
pneumonitis
Doubled letters
1
Ending in S
17
Most frequent letter
I (15)

Questions

How many 11-letter words ending in tis are there?

17. 3 of them are common words.

What is a common example?

PERITONITIS is among the common words in this set.