The noun WORD PROCESSING has 1 sense: 1  1. rapid and efficient processing (storage and printing) of linguistic data for composition and editing. 2  Meaning: 3  Rapid and efficient processing (storage and printing) of linguistic data for composition and editing. 4  Classified under: 5  Nouns denoting natural processes.
Foods may be fortified with vitamin D2 or D3. The major role of vitamin D is to maintain normal blood levels of calcium and phosphorus. Vitamin D helps the body absorb calcium, which forms and maintains strong bones. It is used alone or together with calcium to improve bone health and decrease fractures.
The only proven benefit of vitamin D is its role in helping calcium build strong bones. But that's far from the whole story. Vitamin D helps regulate the immune system and the neuromuscular system. Vitamin D also plays major roles in the life cycle of human cells. Vitamin D is so important that your body makes it by itself -- but only after skin exposure to sufficient sunlight. This is a problem for people in northern climates.