Ortho
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Null Nihils
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{{wiktionary|ortho-}}
'''Ortho''' (from the [[Ancient Greek|Greek]] word ''ὀρθός'' meaning "straight" or "correct") may refer to:
'''In science'''<br>
* An [[arene substitution patterns|arene substitution pattern]] in which two substituents occupy adjacent positions on an aromatic ring
* A prefix formally used to indicate the most hydrated form of an acid
* [[Ortho Mode Transducer]], is a waveguide component
* An [[Orthochromatic]] spectrum is any spectrum of light devoid of red.
'''In cartography'''<br>
* [[Orthophotography]], aerial photography
'''In math'''<br>
* [[Orthogonality]]
* [[Orthonormality]]
'''In computer science'''<br>
* [[Orthographic projection]], a means of representing a three-dimensional (3D) object in two dimensions (2D).
'''In medicine'''<br>
* [[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
'''Corporations'''<br>
* [[Ortho Pharmaceutical]], which merged into [[Ortho-McNeil Pharmaceutical]] before being bought by [[Johnson & Johnson]]
* [[Ortho-Clinical Diagnostics]], another subsidiary of Johnson & Johnson
==See also==
* [[Orthos]]
{{disambig}}