WordReference Random House Unabridged Dictionary of American English © 2025
la•bi•o•gres•sion
(lā′bē ō gresh′ən),USA pronunciation n. [Dentistry.]
- Dentistrylocation of the anterior teeth forward of their natural position.
- labio- + Latin gress(us) (past participle of gradī to step, walk, go) + -ion