The term 'PREFIX WITH -DONTIC' is a combination of two words, 'PREFIX' and '-dontic'. The PREFIX is a word or group of letters added to the beginning of a word to change its meaning. The suffix '-dontic' refers to the field of dentistry. The crossword solutions for this term are ENDO (4 letters) and ORTHO (5 letters). ENDO is short for endodontics, which is a branch of dentistry that deals with the diagnosis and treatment of diseases of the dental pulp and surrounding tissues. ORTHO is short for orthodontics, which is a branch of dentistry that deals with the diagnosis, prevention, and correction of malpositioned teeth and jaws.