12-Letter Words Matching ________T_M_

There are 25 12-letter words that match ________T_M_. 2 are common words, such as APPENDECTOMY and HYSTERECTOMY. A rarer one is SUPERSYSTEMS. In this set, O is the most frequent open letter (23 words). 4 words contain a doubled letter.

Full list 25

Common words

appendectomyhysterectomycounterstampoophorectomyorchidectomysalpingotomytonsillotomytracheostomyurethrectomycaprolactamsclitorectomycologarithms
appendectomyhysterectomycounterstampoophorectomyorchidectomysalpingotomytonsillotomytracheostomyurethrectomycaprolactamsclitorectomycologarithmscryptarithmsdeuterostomedisaccustomsgingivectomyglioblastomalaryngectomymicroanatomyneuroanatomyphotosystemspinealectomypostvagotomystapedectomysupersystems

About this list

Words
25 (2 common words)
Common example
appendectomy
Rare example
supersystems
Doubled letters
4
Ending in S
6
Most frequent letter
O (23)

Questions

How many 12-letter words matching ________t_m_ are there?

25. 2 of them are common words.

What is a common example?

APPENDECTOMY is among the common words in this set.