13-Letter Words Matching ______T__O___

There are 18 13-letter words that match ______T__O___. 3 are common words, such as PHILANTHROPIC and PROGESTERONES. A rarer one is SPERMATOZOANS. 3 words contain a doubled letter.

Full list 18

philanthropicprogesteronestestosteronesandrosteronesdessertspoonsendometriosesendometriosispaleontologicspermatozoidsyellowthroatsantimetabolicblanketflowerorthopteroidsoverwithholdsparasitologicseptentrionalspermatogoniaspermatozoans

About this list

Words
18 (3 common words)
Common example
philanthropic
Rare example
spermatozoans
Doubled letters
3
Ending in S
11

Questions

How many 13-letter words matching ______t__o___ are there?

18. 3 of them are common words.

What is a common example?

PHILANTHROPIC is among the common words in this set.