ortho-
Prefix meaning straight
Ortho- is a prefix meaning straight, correct, or proper.
It appears in words like orthodox (correct belief), orthopedic (correcting skeletal deformities), and orthography (correct spelling).
In chemistry, ortho- designates a specific position of substituents on a benzene ring, distinguished from meta- and para-.
geometric
Triangle altitude concurrence point
- orthonormalPerpendicular and unit-length
- orthogonalityState of being independent
orthocenter
Triangle altitude concurrence point
- orthonormalPerpendicular and unit-length
- orthogonalityState of being independent
orthosis
External body support device
- orthosesMedical support devices
- Greek OrthodoxByzantine Christian tradition
- orthopedic shoeFootwear correcting foot problems
- orthopedic surgeonDoctor treating musculoskeletal conditions
- orthodontic appliancesDevices correcting tooth alignment
- Orthodox JewStrictly Torah-observant person
- Orthodox ChristianAdherent of Eastern Christianity
orthodox, orthodoxy, orthodoxies, unorthodox, orthogonal, orthography, orthographic, orthopedic, orthopedics