12-Letter Words Matching ________S_T_

There are 15 12-letter words that match ________S_T_. 3 are common words, such as BIODIVERSITY and PREREQUISITE. A rarer one is VOLUMINOSITY. In this set, I is the most frequent open letter (14 words). 1 words contain a doubled letter.

Full list 15

biodiversityprerequisitescrupulosityectoparasiteendoparasitelachrymositymeticulositymultiversitytergiversatedecompensatehomozygositynonnecessitysemiparasiteungenerosityvoluminosity

About this list

Words
15 (3 common words)
Common example
biodiversity
Rare example
voluminosity
Doubled letters
1
Ending in S
0
Most frequent letter
I (14)

Questions

How many 12-letter words matching ________s_t_ are there?

15. 3 of them are common words.

What is a common example?

BIODIVERSITY is among the common words in this set.