12-Letter Words Matching ___T_____M__

There are 14 12-letter words that match ___T_____M__. 3 are common words, such as CENTIGRAMMES and MULTIVITAMIN. A rarer one is SEXTODECIMOS. In this set, I is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 14

centigrammesmultivitaminprotoplasmicepitheliomasgastrocnemiiphotothermicpostorgasmicmultistemmedphotochromicphotodynamicphotopolymerphytochromespostischemicsextodecimos

About this list

Words
14 (3 common words)
Common example
centigrammes
Rare example
sextodecimos
Doubled letters
3
Ending in S
4
Most frequent letter
I (12)

Questions

How many 12-letter words matching ___t_____m__ are there?

14. 3 of them are common words.

What is a common example?

CENTIGRAMMES is among the common words in this set.