12-Letter Words Matching _______O___N

There are 13 12-letter words that match _______O___N. 2 are common words, such as SALUTATORIAN and SPERMATOZOON. A rarer one is THYROTROPHIN. In this set, R is the most frequent open letter (13 words). 1 words contain a doubled letter.

Full list 13

salutatorianspermatozoonflavoproteinglucoproteinglycoproteinlactoproteinprehistorianantithrombinluteotrophinparkinsonianporphyropsinspermatozoanthyrotrophin

About this list

Words
13 (2 common words)
Common example
salutatorian
Rare example
thyrotrophin
Doubled letters
1
Ending in S
0
Most frequent letter
R (13)

Questions

How many 12-letter words matching _______o___n are there?

13. 2 of them are common words.

What is a common example?

SALUTATORIAN is among the common words in this set.