Words in english starting with O

• orthopaedics — Noun – English ～ the branch of medical science concerned with disorders or deformities of the spine and joints
• orthopaedist — Noun – English ～ a specialist in correcting deformities of the skeletal system (especially in children)
• orthopedic — Adjective – English ～ of or relating to orthopedics; "orthopedic shoes"
• orthopedical — Adjective – English ～ of or relating to orthopedics; "orthopedic shoes"
• orthopedics — Noun – English ～ the branch of medical science concerned with disorders or deformities of the spine and joints
• orthopedist — Noun – English ～ a specialist in correcting deformities of the skeletal system (especially in children)
• orthophosphate — Noun – English ～ a salt of phosphoric acid
• orthophosphoric acid — Noun – English ～ an acid used in fertilizers and soaps: H3PO4
• orthophosphorous acid — Noun – English ～ a clear or yellow monobasic acid (H3PO2)
• orthopnea — Noun – English ～ form of dyspnea in which the person can breathe comfortably only when standing or sitting erect; associated with asthma and emphysema and angina pectoris
• Orthopristis chrysopterus — Noun – English ～ found from Long Island southward
• Orthopristis — Noun – English ～ a genus of Haemulidae
• orthopter — Noun – English ～ heavier-than-air craft that is propelled by the flapping of wings
• Orthoptera — Noun – English ～ grasshoppers and locusts; crickets
• order Orthoptera — Noun – English ～ grasshoppers and locusts; crickets
• orthopteran — Noun – English ～ any of various insects having leathery forewings and membranous hind wings and chewing mouthparts
• orthopteron — Noun – English ～ any of various insects having leathery forewings and membranous hind wings and chewing mouthparts
• orthopterous insect — Noun – English ～ any of various insects having leathery forewings and membranous hind wings and chewing mouthparts
• orthoptic — Adjective – English ～ of or relating to normal binocular vision
• orthoptics — Noun – English ～ treatment of defects of binocular vision (such as strabismus and amblyopia) by nonsurgical measures (especially by exercises to strengthen the eye muscles)

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