ortho-, orth-

(Greek: right, straight, correct, true; designed to correct)

orthometer
An instrument for determining the relative protrusion of the eyeballs.
orthometry
1. The art or practice of constructing verses correctly.
2. The laws of correct versification.
orthomolecular
1. Concerning the maintenance of optimal quantities of bodily substances.
2. Indicating the normal chemical constituents of the body or the restoration of those constituents to normalcy.
orthomolecular therapy
The treatment of disease based on the theory that restoration of optimal concentrations of substances normally present in the body; such as, vitamins, trace elements, and amino acids, will bring about a cure.
orthomorphia
The surgical and mechanical correction of structural deformities.
orthomorphic
1. Relating to, or referring to, a map or chart on which small shapes or areas are accurately represented.
2. Preserving the correct shape.
orthomorphic projection
A map projection in which a small area is rendered in its true shape.
orthomorphis
The correct form.
orthomyxovirus
Any of the family of viruses including the viruses of influenza.
orthopantograph (s) (noun), orthopantographs (pl)
A device that makes images of the entire dentition, alveolar bone, and other structures of the body on a single extraoral or outside the mouth film.
orthopathy
The treatment of illness or disease without the use of drugs.
orthopedic, orthopaedic (British)
1. Relating to or concerned with the cure of deformities in children, or of bodily deformities in general.
2. Orthopedic bed, a bed in an orthopedic ward; normally one individually designed to relieve specific skeletal symptoms; more generally, a bed with a very firm mattress or board.

It also refers to orthopedic bedding, divan, etc.

3. An orthopedic shoe, a shoe designed to ease or to correct deformities of the feet; also, orthopedic boot, footwear.
orthopedics, orthopaedics (British)
1. The branch of surgery which is concerned with the correction of skeletal and spinal deformities; especially, in children.
2. The medical specialty dealing with the preservation, restoration, and development of the functions of the skeletal system of the body, its articulations, and associated structures.
orthopedist, orthopaedist (British)
1. The branch of medicine concerned with the nature and correction of disorders of the bones, joints, ligaments, or muscles.
2. One who cures deformities; an orthopedic surgeon.

Originally from Greek paideia, "child rearing"; applied specifically to childhood bone disorders.

orthopedy
The art, or practice, of curing the deformities of children; or, by extension, any deformities of the human body.