Glossary O

Ortho Evra patch refers to a thin, peach-colored patch that sticks to the skin and time releases synthetic estrogen and progestin into the bloodstream to inhibit ovulation, increase cervical mucus, and render the uterus inhospitable Ortho Evra patch is also referred to as the "Patch"

Orthography is defined as the representation of a sound by written or printed symbols.

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- 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.