12-Letter Words Matching _________Y__

There are 23 12-letter words that match _________Y__. 2 are common words, such as FORMALDEHYDE and PTERODACTYLS. A rarer one is TRACHEOPHYTE. In this set, R is the most frequent open letter (20 words). 1 words contain a doubled letter.

Full list 23

formaldehydepterodactylsacetaldehydeanticatalystartiodactylsbenzaldehydechlorenchymachrysoberylscryptanalystdaguerrotypedermatophytepteridophytesclerenchymaspermatocyteagranulocytecounterstyleheterokaryonmicroanalystphanerophytephreatophyteprotomartyrsreticulocytetracheophyte

About this list

Words
23 (2 common words)
Common example
formaldehyde
Rare example
tracheophyte
Doubled letters
1
Ending in S
4
Most frequent letter
R (20)

Questions

How many 12-letter words matching _________y__ are there?

23. 2 of them are common words.

What is a common example?

FORMALDEHYDE is among the common words in this set.