Glossary O

- OSA (Obstructive Sleep Apnea) : OSA (Obstructive Sleep Apnea ) refers to a type of sleep Apnea in which the muscles in the throat collapse, blocking the airway.

OSHA acronym for Occupational Safety and Health Administration, a United States federal agency.

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Osmotic pressure is the tendency of water to flow across a semi-permeable membrane from the area of low solute concentration to the area of high solute concentration

Osmotic thirst refers to thirst that results from an increase in the concentration of solutes in the body

Ossicles are three (3) small bones in the middle ear that transmit vibrations from the outer to the inner ear.

Ostensive definitions refers to the process of defining a word by pointing to its referent.

Osteoarthritis is a form of Arthritis that results when the articular cartilage begins to crack or wear away because of overuse of a particular joint; may also result from injury or other causes; often affects the weight-bearing joints and is common among athletes and the elderly.

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Osteogenesis Imperfecta or OI refers to a disease caused by an abnormality in the collagen protein that the body requires for bones as well as other structures, such as teeth, ligaments and skin. The condition often leads to an increased likelihood of fractures, as well as fragile teeth, lax joints, bruising and blue or grey sclera (whites of eyes). Some people with brittle bone diseases develop deafness and some have short stature. Osteogenesis Imperfecta (OI) is also known as Brittle bone disease

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