Definitions

1. noun

A prefix meaning straight or correct, often used in medical and scientific terminology.

“Orthodontics is the branch of dentistry that deals with the correction of teeth alignment.”

2. adjective

Straight or correct, often used in medical and scientific terminology.

“The orthodontic treatment corrected her teeth alignment.”

3. adverb

In a correct or normal position, often used in medical and scientific terminology.

“The orthopedic specialist instructed the patient to stand up ortho to the X-ray machine.”