1 A mathematical determination of the amount or number of something: finding ways of saving money involves complicated calculations [mass noun]: the calculation of depreciation. More example sentences. Synonyms. 1  Precise mathematical calculations are worked out and this determines how a person's life is affected.
A vitamin A deficiency can lead to a vision condition called, Keratomalacia. Symptoms of this condition include: night blindness, dry eyes (often extreme cases), blurred or clouded vision, and softening of the cornea.
Certain groups, such as older adults and pregnant women, need larger amounts of some types of vitamin B. Certain conditions, such as Crohnâs disease, Celiac disease, HIV, and misuse of alcohol can result in poor absorption of vitamin B. Symptoms of a deficiency depend on what type of vitamin B you lack. They can range from fatigue and confusion to anemia or a compromised immune system. Skin rashes also can occur.