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ortho- in Wiktionary, the free dictionary.
Ortho- is a Greek prefix meaning “straight”, “upright”, “right” or “correct”.
Ortho may refer to:
Science
Mathematics
Orthogonal , a synonym for perpendicular
Orthonormal , the property that a collection of vectors are mutually perpendicular and each of unit magnitude
Orthodrome, a synonym for
great circle , a geodesic on the sphere
Orthographic projection , a parallel projection onto a perpendicular plane
Medicine
Orthomyxovirus , a family of viruses to which influenza belongs
Orthodontics , a specialty of dentistry concerned with the study and treatment of malocclusions
Orthopedic , the study of the musculoskeletal system
Ortho-DOT , a psychedelic drug
Ortho-cept and Ortho Tri-cyclen, kinds of oral contraceptive drug
Theology
Business
See also
Topics referred to by the same term