You searched for: “onychophagiologist”
onychophagiologist (s), onychophagiologists (pl) (nouns)
A doctor specializing in the nervous habit of biting the finger nails: "Shelby had to be taken to an onychophabiologist so she could be cured of the damage caused by her onychophagia."

This entry is located in the following unit: onych-, onycho-, ony-, -onychia, -onychial, -onychium, -onyx- + (page 4)