12-Letter Words Matching _______T_M__

There are 12 12-letter words that match _______T_M__. 3 are common words, such as HIPPOPOTAMUS and MULTIVITAMIN. A rarer one is SCYPHISTOMAS. 5 words contain a doubled letter.

Full list 12

hippopotamusmultivitaminunaccustomedbellbottomedbetweentimesastrocytomasenterostomalharvesttimesnephrostomespolyrhythmicscyphistomaescyphistomas

About this list

Words
12 (3 common words)
Common example
hippopotamus
Rare example
scyphistomas
Doubled letters
5
Ending in S
6

Questions

How many 12-letter words matching _______t_m__ are there?

12. 3 of them are common words.

What is a common example?

HIPPOPOTAMUS is among the common words in this set.