13-Letter Words Matching ________I_S__

There are 13 13-letter words that match ________I_S__. 2 are common words, such as ELEPHANTIASES and ELEPHANTIASIS. A rarer one is HYPOSPADIASES. 0 words contain a doubled letter.

Full list 13

elephantiaseselephantiasisendometriosesendometriosishelminthiasishematopoiesisleishmaniasesleishmaniasisendosymbiosesendosymbiosishelminthiaseshematopoieseshypospadiases

About this list

Words
13 (2 common words)
Common example
elephantiases
Rare example
hypospadiases
Doubled letters
0
Ending in S
13

Questions

How many 13-letter words matching ________i_s__ are there?

13. 2 of them are common words.

What is a common example?

ELEPHANTIASES is among the common words in this set.