Skip to main content Skip to Search Box
20 Topic Pages Found in Health & Medicine and starting with the letter O
Details List
All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Open Oats
Oats

cereal plants of the genus Avena of the family Gramineae ( grass family). Most species are annuals of moist temperate regions. The early history of

Open Obesity
Obesity

A condition in which the energy stores of the body (mainly fat) are too great. It is commonplace in prosperous countries and is increasing in

Open Obsessive-compulsive disorder
Obsessive-compulsive disorder

Obsessions and the compulsive behaviors often associated with them are symptoms of an obsessive-compulsive disorder (OCD). Like many other mental

Occupational diseases

illness incurred because of the conditions or environment of employment. Unlike with accidents, some time usually elapses between exposure to the

Ochoa, Severo, 1905-1993

Spanish-born US biochemist who was awarded a Nobel Prize for Physiology or Medicine in 1959 for the discovery of enzymes that catalyse the formation

olive oil

pale yellow to greenish oil obtained from the pulp of olives by separating the liquids from solids. Olive oil was used in the ancient world for

Open ophthalmology
ophthalmology

( ŏf´´thălmŏl'əjē ), branch of medicine specializing in the anatomy, function and diseases of the eye . Ophthalmologists specialize in the medical and

Opiate

According to the strict definition, opiates are drugs derived from opium , and opioids are opiate-like substances either made in the body—the

Open opium
opium

substance derived by collecting and drying the milky juice in the unripe seed pods of the opium poppy , Papaver somniferum. Opium varies in color from

Open Oral cancer
Oral cancer

Lesion on tongue, lip, and other areas in the mouth Oral cancer is cancer of the mouth. It is a common form of head and neck cancer.