15-Letter Words Matching ______O__O_____

There are 20 15-letter words that match ______O__O_____. 0 are common words, such as CEPHALOCHORDATE and ELECTROPHORESES. A rarer one is SPECTROSCOPISTS. 3 words contain a doubled letter.

Full list 20

cephalochordateelectrophoreseselectrophoresiselectrophoreticphosphoproteinsspectroscopicalapolipoproteinsbronchoscopistscephalothoracescephalothoraxescorticotrophinselectroacousticelectromyogramselectromyographelectrophoresedhypersomnolencepaleozoologicalpaleozoologistsprotozoologistsspectroscopists

About this list

Words
20 (0 common words)
Common example
cephalochordate
Rare example
spectroscopists
Doubled letters
3
Ending in S
12

Questions

How many 15-letter words matching ______o__o_____ are there?

20. 0 of them are common words.

What is a common example?

CEPHALOCHORDATE is among the common words in this set.