Ortho

Look up ortho- in Wiktionary, the free dictionary.

Ortho is a Greek prefix meaning “straight,” “upright,” “right,” or “correct”.

Ortho may refer to:

In science

• arene substitution patterns, two substituents that occupy adjacent positions on an aromatic ring
• Chlordane, an organochlorine compound that was used as a pesticide

In medicine:

• Orthomyxovirus - 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

In theology:

• Orthodoxy, right (correct) belief
• Orthopraxy, right (correct) action

In corporations:

• Ortho Pharmaceutical, which merged into Ortho-McNeil Pharmaceutical before being bought by Johnson & Johnson
• Ortho-Clinical Diagnostics, another subsidiary of Johnson & Johnson
• Ortho, a lawn care and pesticide company owned by The Scotts Miracle-Gro Company

See also

• Orthos (disambiguation)
• Ortho Mode Transducer
• Orthochromatic
• Orthophotography
• Orthogonality
• Orthonormality
• Orthographic projection
• Orthoptera