rickets definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a disease of the skeletal system, chiefly of children, resulting from absence of the normal effect of vitamin D in depositing calcium salts in the bone, and characterized by a softening and, often, bending of the bones: usually caused by a lack of vitamin D and insufficient exposure to sunlight
Origin: altered ; from uncertain or unknown; perhaps Classical Greek rhachitis, rachitis
rickets definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun (used with a sing. or pl. verb)
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 rachitis.
Origin: Origin unknown.
rickets - Medical Definition
The American Heritage® Medical Dictionary Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A bone disease resulting in defective skeletal growth in children, analogous to osteomalacia in adults, characterized by bone demineralization caused by deficiency or impaired metabolism of vitamin D or phosphates. Also called infantile osteomalacia, juvenile osteomalacia, rachitis.
rickets - Science Definition
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.