13-Letter Words Matching _____DO______

There are 21 13-letter words that match _____DO______. 5 are common words, such as KALEIDOSCOPES and KALEIDOSCOPIC. A rarer one is TETRODOTOXINS. 2 words contain a doubled letter.

Full list 21

kaleidoscopeskaleidoscopicmethodologiesorthodontistsperiodontistsmethodologistpteridophytessacerdotalismsuperdominantsynecdochicaldisendowmentshazardousnessinterdominionoleandomycinspeptidoglycanperiodontallypteridologiespteridologistpteridospermssacerdotalisttetrodotoxins

About this list

Words
21 (5 common words)
Common example
kaleidoscopes
Rare example
tetrodotoxins
Doubled letters
2
Ending in S
11

Questions

How many 13-letter words matching _____do______ are there?

21. 5 of them are common words.

What is a common example?

KALEIDOSCOPES is among the common words in this set.