rickets(redirected from refractory rickets)
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n. (used with a sing. or pl. verb)
A bone disease of children marked by bone demineralization and defective bone growth, caused usually by a deficiency of or an impaired metabolism of vitamin D. Also called rachitis.
(Pathology) (functioning as singular or plural) 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
[C17: of unknown origin]
(used with a sing. v.) a childhood disease in which the bones soften from an inadequate intake of vitamin D and insufficient exposure to sunlight.
[1635–45; orig. uncertain]
A bone disorder in children that is caused by lack of vitamin D, either in the diet or from lack of exposure to sunlight. In a child with rickets, the bones do not grow properly and become soft and misshapen.
The disease of osteomalacia in children. Growing bones cannot calcify due to lack of nutrients, so their ends become visibly enlarged.