a disease of childhood, characterized by softening of the bones as a result of inadequate intake of vitamin D and insufficient exposure to sunlight, also associated with impaired calcium and phosphorus metabolism.
(functioning as singular or pl) (pathol) a disease mainly of children, characterized by softening of developing bone, and hence bow legs, malnutrition, and enlargement of the liver and spleen, caused by a deficiency of vitamin D
rickets rick·ets (rĭk’ĭts)
A deficiency disease resulting from a lack of vitamin D or calcium and from insufficient exposure to sunlight, characterized by defective bone growth and occurring chiefly in children. Also called infantile osteomalacia, juvenile osteomalacia, rachitis.
A bone disease seen mostly in children, caused by a deficiency of vitamin D, usually as a result of inadequate dietary intake or lack of exposure to sunlight. This deficiency causes decreased calcium absorption from the intestine and abnormalities in formation and mineralization of skeletal bone, resulting in defective bone growth and deformity.
Ricketts Rick·etts (rĭk’ĭtz), Howard Taylor. 1871-1910. American pathologist who discovered bacteria of the genus Rickettsia and determined the cause and methods of transmission of Rocky Mountain spotted fever and typhus.
noun, plural rickettsiae [ri-ket-see-ee] /rɪˈkɛt siˌi/ (Show IPA), rickettsias [ri-ket-see-uh z] /rɪˈkɛt si əz/ (Show IPA) 1. any member of the genus Rickettsia, comprising rod-shaped to coccoid microorganisms that resemble bacteria but can be as small as a large virus and reproduce only inside a living cell, parasitic in fleas, ticks, lice, and mites and […]
- Rickettsia akari
Rickettsia akari Rickettsia ak·a·ri (āk’ə-rī’) n. A bacterium that causes rickettsialpox in humans.
- Rickettsia australis
Rickettsia australis Rickettsia aus·tra·lis (ô-strā’lĭs) n. A bacterium causing a spotted fever that elicits the production of an antibody that is different from the one that reacts with other rickettsial species.