14-Letter Words Matching _________E_O__

There are 12 14-letter words that match _________E_O__. 1 are common words, such as MONOCOTYLEDONS and BOUSTROPHEDONS. A rarer one is NONNITROGENOUS. In this set, S is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

monocotyledonsboustrophedonscorticosteroidcorticosteroneepiphenomenonssacchariferousactinomycetousdiamondiferousdinitrophenolsisoproterenolsneurosecretorynonnitrogenous

About this list

Words
12 (1 common words)
Common example
monocotyledons
Rare example
nonnitrogenous
Doubled letters
2
Ending in S
9
Most frequent letter
S (12)

Questions

How many 14-letter words matching _________e_o__ are there?

12. 1 of them are common words.

What is a common example?

MONOCOTYLEDONS is among the common words in this set.