Rickets (noun)

A disease characterized by weak or soft bones, caused by a deficiency of vitamin D, calcium, or phosphate in the diet or by a problem with the way the body absorbs these nutrients.

Origin:

From the old english "ricket" meaning "a disease characterized by softening and bending of the bones".

Examples:

1. Rickets is a disease that affects children and is caused by a lack of vitamin D.
2. The patient was diagnosed with rickets and prescribed vitamin D supplements.
3. Rickets can lead to bowleggedness and a curved spine.
4. The patient's rickets was caused by a lack of sunlight exposure.
5. Rickets can be prevented by a balanced diet and regular exposure to sunlight.