easy definition of vitamins
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vitamin noun. 1  Any of various fat-soluble or water-soluble organic substances that are essential in minute amounts for normal growth and activity of living organisms. 2  A preparation containing one or more vitamins, often taken as a dietary supplement.oun. 1  Any of various fat-soluble or water-soluble organic substances that are essential in minute amounts for normal growth and activity of living organisms. 2  A preparation containing one or more vitamins, often taken as a dietary supplement.
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Medical Definition of Vitamins Vitamin B3: Niacin, an essential part of coenzymes of body metabolism. Deficiency causes inflammation of the skin, vagina, rectum and mouth, as well as mental slowing. Vitamin B6: Pyridoxine, a cofactor for enzymes.
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B vitamins B vitamins. B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism. Though these vitamins share similar names, research shows that they are chemically distinct vitamins that often coexist in the same foods. In general, dietary supplements containing all eight are referred to as a vitamin B complex.
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Vitamins Vitamins are substances that your body needs to grow and develop normally. There are 13 vitamins your body needs. You can usually get all your vitamins from the foods you eat. Your body can also make vitamins D and K. People who eat a vegetarian diet may need to take a vitamin B12 supplement. Each vitamin has specific jobs. If you have low levels of certain vitamins, you may get health problems. For example, if you don't get enough vitamin C, you could become anemic.
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- vitamin noun [C]. B2 any of a ​group of ​natural ​substances that are ​necessary in ​small ​amounts for the ​growth and good ​health of the ​body: a vitamin ​pill Oranges are ​full of vitamin C.More examples. 1  A ​ diet ​ deficient in vitamin D may ​ cause the ​ disease ​ rickets. biology any of a ​group of ​natural ​substances that are ​necessary in ​small ​amounts for ​growth and good ​health and that are ​obtained from ​food. (Definition of vitamin from the Cambridge Academic Content Dictionary © Cambridge University Press).
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Water-soluble vitamins water-soluble vitamins, n.pl any of a variety of substances essential to human health and function that dissolve in water, such as vitamin C and vitamin B complex. Assist important enzyme activity such as energy production from fats and carbohydrates. If excessive amounts are consumed, they are passed from the body through urine, whereas a deficiency affects growing or rapidly metabolizing tissues such as those in blood, skin, nervous system, and the digestive tract.
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vitamin- definition and synonyms The Macmillan Dictionary blog explores English as it is spoken around the world today. global English and language change from our blog Definition and synonyms of vitamin from the online English dictionary from Macmillan Publishers Limited.
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Vitamins: What are they and what do they do? Vitamins are organic compounds that are needed in small quantities to sustain life. Most vitamins need to come from food. This is because the human body either does not produce enough of them, or it does not produce any at all. Each organism has different vitamin requirements. For example, humans need to consume vitamin C, or ascorbic acid, but dogs do not.
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What Are Vitamins? - Definition, Types, Purpose & Examples Types and Examples of Foods. There are two types of vitamins: fat-soluble and water-soluble. Fat-soluble vitamins are stored in your fat cells, consequently requiring fat in order to be absorbed. Water-soluble vitamins are not stored in your body; therefore, they need to be replenished daily.our body cannot produce vitamins itself, so you must get them through food you eat or in some cases supplements. There are 13 vitamins that are essential to your body working well. Knowledge of the different types and understanding the purpose of these vitamins are important for good health.
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- To understand why we need vitamins, it’s best to first understand what vitamins are. Vitamins are compounds which are necessary for our normal growth and function, which we cannot make within our bodies, and so we must obtain them from our foods. Most of the compounds needed for our body cells to function for our health, can be made by our cells from other nutrients.
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- Noun. 1. water-soluble vitamin-any vitamin that is soluble in water. vitamin-any of a group of organic substances essential in small quantities to normal metabolism.B complex, B vitamin, B-complex vitamin, vitamin B, vitamin B complex, B-originally thought to be a single vitamin but now separated into several B vitamins.ater-soluble vitamin-any vitamin that is soluble in water. vitamin-any of a group of organic substances essential in small quantities to normal metabolism.
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vitamin A vitamin A. A vitamin important for normal vision, tissue growth, and healthy skin. It is found in fish-liver oils, milk, green leafy vegetables, and yellow vegetables and fruits.Also called retinol.. vitamin A-any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes. antiophthalmic factor, axerophthol, A. fat-soluble vitamin-any vitamin that is soluble in fats.
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Vitamins Vitamins, one of the most essential nutrients required by the body and can be broadly classified into two main categories i.e., water-soluble vitamins and fat-soluble vitamins. Water-soluble vitamins cannot be stored in the body, so you need to get them from food every day. They can be destroyed by overcooking.
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Chapter 12 Fat soluble vitamins 1. Vitamins: essential, organic substances needed in small amounts in the diet. a. Fat-soluble vitamins: dissolve in organic solvents (e.g., ether, benzene) b.
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Vitamins: What are they and what do they do? Vitamins are organic compounds which are needed in small quantities to sustain life. We get vitamins from food, because the human body either does not produce enough of them, or none at all. An organic compound contains carbon.When an organism (living thing) cannot produce enough of an organic chemical compound that it needs in tiny amounts, and has to get it from food, it is called a vitamin.itamins are organic compounds which are needed in small quantities to sustain life. We get vitamins from food, because the human body either does not produce enough of them, or none at all. An organic compound contains carbon.
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Cas9 Cas9 (C RISPR as sociated protein 9) is an RNA-guided DNA endonuclease enzyme associated with the CRISPR (Clustered Regularly Interspersed Palindromic Repeats) adaptive immunity system in Streptococcus pyogenes, among other bacteria.
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Medical Definition of Vitamins Vitamin C: Ascorbic acid, important in the synthesis of collagen, the framework protein for tissues of the body. Deficiency leads to scurvy, characterized by fragile capillaries, poor wound healing, and bone deformity in children.
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vitamin any of a group of substances that are essential, in small quantities, for the normal functioning of metabolism in the body. They cannot usually be synthesized in the body but they occur naturally in certain foods: insufficient supply of any particular vitamin results in a deficiency disease.
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Overview Vitamins are carbon-containing molecules and are classified as either water-soluble or fat-soluble. They can be changed and inactivated by heat, oxygen, light and chemical processes. The amount of vitamins in a food depends on the growing conditions, processing, storage and cooking methods.
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- A vitamin (US /ˈvaɪtəmɪn/ and UK /ˈvɪtəmɪn/) is an organic compound and a vital nutrient that an organism requires in limited amounts.
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Vitamins: What are they and what do they do? Vitamins are organic compounds which are needed in small quantities to sustain life. We get vitamins from food, because the human body either does not produce enough of them, or none at all. An organic compound contains carbon.When an organism (living thing) cannot produce enough of an organic chemical compound that it needs in tiny amounts, and has to get it from food, it is called a vitamin.here are fat-soluble and water-soluble vitamins. Fat-soluble vitamins are stored in the fat tissues of our bodies, as well as the liver. Fat-soluble vitamins are easier to store than water-soluble ones, and can stay in the body as reserves for days, some of them for months.
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What is the difference between vitamins and minerals? Minerals are pure inorganic elements (containing atoms of the same element), meaning they are much simpler in chemical form than vitamins. All vitamins are essential or required by our bodies, whereas only some minerals are essential nutrients.
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- A vitamin is an organic compound and a vital nutrient that an organism requires in limited amounts.
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Vitamin In humans there are 13 vitamins: 4 fat-soluble (A, D, E, and K) and 9 water-soluble (8 B vitamins and vitamin C). Water-soluble vitamins dissolve easily in water and, in general, are readily excreted from the body, to the degree that urinary output is a strong predictor of vitamin consumption.he daily dosage of a vitamin supplement for example cannot exceed 300% of the recommended daily allowance, and for vitamin A, this limit is even lower (200%). Such regulations are applicable in most European countries.
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vitamin E Vitamin E definition, a pale-yellow viscous fluid, abundant in vegetable oils, whole-grain cereals, butter, and eggs, and important as an antioxidant in the deactivation of free radicals and in maintenance of the body's cell membranes: deficiency is rare. See more.