Dictionary:

demineralization

  (dē-mĭn'ər-ə-lĭ-zā'shən)

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1. The act or process of removing minerals or mineral salts from a liquid, such as water.
2. The loss, deprivation, or removal of minerals or mineral salts from the body, especially through disease, as the loss of calcium from bones or teeth.

A measurable decrease in the level of inorganic salts or minerals in human tissue.

Excessive elimination of mineral or organic salts from the tissues of the body.