An organic catalyst, or a component thereof, that facilitates specific and necessary functions.

An organic compound essential in small quantities for normal physiologic and metabolic functioning of the body.

Chemical substances (micro-nutrients) required in trace concentrations acting as a cofactor with enzymes in catalyzing biochemical reactions.

A nutrient that controls many chemical processes in the body.

Any of various fat-soluble or water-soluble organic substances essential in minute amounts for normal growth and activity of the body and obtained naturally from plant and animal foods. Volatile Giving off fumes readily, e.g. petrol, perfume, etc.

the name for a substance that the body cannot make and must obtain from food or other sources.

A substance that is critical for proper functioning of a living organism that the organism is unable to produce in sufficient quantities for itself.

vita: life] • Any one of several structurally unrelated organic compounds that an organism cannot synthesize itself, but nevertheless requires in small quantity for normal growth and metabolism.

Complex organic chemical compound found in most natural food products essential in the diet of humans and other animals. Vitamins A, C, and E appear most relevant to the healthy prostate.

(or sometimes vitamine, from "vital amine" [Funk]): an organic substance essential in small quantities to the normal health of an animal. Vitamins must typically be supplied to the animal through diet. The chemical names for some vitamins follow. For structures, see "Molecule of the Month" at Oxford University. ... : retinol, C20H30O, a fat-soluble vitamin derived from carotenes ... : a group of water-soluble, heat labile compounds that typically serve as co-enzymes. They include many examples that contain amine groups (as in "vital amine"). ...

a part of the diet which the body needs in small amounts, e.g. vitamin A, vitamin B12 and vitamin D. Vitamins are organic.

organic molecules essential in small amounts for normal metabolism, growth and development of the body.

An organic (carbon-containing) required in very small amounts to promote one or several specific and essential biochemical reactions within the living cell; prolonged deficiencies of a vitamin cause diseases which are quickly remedied when the vitamin is supplied once again.

vita, life] An organic molecule required in the diet in very small amounts; vitamins serve primarily as coenzymes or parts of coenzymes.

Literally, vital amines. A wide range of compounds that are either water-soluble or fat-soluble and are necessary components of the diet of higher organisms, such as mammals.

An organic compound which occurs in very small amounts in most vegetable matter without which normal functions may not proceed. There are many different ones and they were originally distinguished by letters of the alphabet, vitamin A, B, C, etc. Often referred to by a name indicating their chemical composition, eg. panthothenic acid, riboflavin, cyanocabalamine, etc. Absence of any one in the diet produces a specific syndrome. Continued complete absence can result in death. Some animals appear to be able to manufacture their own requirements of certain vitamins.

any of a group of organic substances essential in small quantities to normal metabolism

a category of organic molecule that is required by a living organism for normal health

a chemically organic substance (meaning it contains carbon) essential for regulating both the metabolic functions within the cells and the biochemical processes that release energy from food

a compound that can not be synthesized by a given organism but is nonetheless vital to its survival or health

a food substance essential for health

a group of organic molecule which is required by the living beings in a minute amount for having proper health

a micronutrient, essential for health, that cannot be synthesised in sufficient amounts by the animal or human body

a molecule required by the body in sufficient amounts for proper health, nearly always obtained from external sources

a molecule that your body needs, but that it cannot make on its own

a naturally occurring chemical that is required for life by humans but is not made in their own bodies

an essential nutrient that the body cannot produce in adequate amounts

an organic chemical compound your body must have for normal growth, metabolism (creating energy), and health

an organic compound and these are essential to help your body grow and remain healthy

an organic compound needed in the amounts sign for the normal health but she is one that we cannot we synthesized

an organic compound needed in trace amounts for normal health but is one that we cannot synthesize

an organic molecule An organic compound refers to any member of a large class of chemical compounds whose molecules contain carbon, with exception of carbides, carbonates and carbon oxides

an organic molecule needed in trace amounts for normal growth and metabolic processes

an organic molecule whose insufficiency in the diet can result in disease

an organic, noncalorigenic food substance that is required in small amounts for certain metabolic functions and cannot be manufactured in the body

an organic substance, a molecule that helps you and your body to react in a certain way to other influences

an organic substance essential for life that regulates metabolism and assists the processes that release energy from digested food

an organic substance or chemical found in food that is absolute

an organic substance that your body requires to help regulate functions within cells

a nutrient that your body needs to stay healthy

a small molecule that your body needs to carry out a certain reaction

a substance (organic molecule) whose presence is crucial to the normal every day life function of animals

a substance that the body cannot make and is necessary for metabolism

a substance which if not in the body, the body would get sick from a known disease

An organic substance found in foods and essential in small quantities for growth, health and survival. The body needs vitamins as well as other food constituents such as proteins, fats, carbohydrates, minerals and water. Vitamins serve as coenzymes or cofactors in enzymatic reactions. They are required only in trace quantities because they are not consumed in the reactions.

Natural substances that plants and animals need to grow.

A vital nutrient. Organic compounds that function as part of biological enzyme systems essential to normal metabolic subcellular functioning of cattle, especially energy transformation and metabolic regulations.

An organic substance that plays an essential role in regulating cell functions throughout the body. Most vitamins must be ingested, because the body cannot produce them.

A group of organic micronutrients, present in minute quantities in natural foodstuffs, that are essential to normal metabolism.

any of the various organic substances that are essential in small amounts for most animals and mostly obtained from foods

an organic substance that acts as a coenzyme and/or regulator of metabolic processes. There are 13 known vitamins, most of which are present in foods or supplements; some are produced within the body. Vitamins are crucial for many bodily functions including a healthy immune response.

an organic compound that cannot be manufactured by the body and is needed in small quantities to catalyze metabolic processes

An organic chemical compound essential for normal health. You must get all your vitamins from outside your body - from the foods you eat and from any supplements you take.

An organic compound that is required in relatively small amounts for growth of an organism. Vitamins often function as coenzymes.

an organic substance needed to continue biological processes

Any organic substance that is essential to human health, and which the body cannot make for itself, at least not in sufficient quantities. Vitamins are added to foods to increase their nutritional value.

A nutritional component necessary for normal metabolism and growth.

An organic molecule or substance other than a carbohydrate, lipid or protein that cannot be synthesized by the body.

A nutrient essential in small amounts for good nutrition and health. Examples of vitamins include vitamin D, vitamin C, and vitamin K. Like minerals, the best way for vitamins to enter the body is through food.

A vitamin is an organic substance that occurs in many foods in small amounts and is necessary for normal metabolism.

An essential nutrient that is required by the body and that must be obtained through diet or supplementation. Vitamins and minerals are essential components in enzymes (speed up reactions) and coenzymes (help enzymes in their chemical reactions). Vitamins can be classified into two groups: water-soluble and fat-soluble. Water-soluble vitamins must be taken into the body daily as they can't be stored and are excreted within one to four days. Fat-soluble vitamins can be stored for longer periods of time in the body's fatty tissue and liver.

A key nutrient that the body needs in small amounts to grow and stay strong. Examples are vitamins A, C, and E.

one of the six types of nutrients needed to sustain human life. Vitamins help form blood cells, hormones, and genetic material. Vitamins are found in meat and dairy products, vegetables, fruits, cereals, and grains.

A nutrient that the body needs in small amounts to function and maintain health. Examples are vitamins A, C, and E.

An unspecific term that originally meant a substance in foods that is "life-giving," but today is indiscriminately used for numerous compounds both natural and artificial, which vary widely in their effects on the body.

Any one of a group of constituents of most foods in their natural state which are essential for normal nutrition.

An organic substance found in food and essential in small quantities for good health.

Organic substance required by the body in small amounts to perform numerous functions.

Vitamins are nutrients required in very small amounts for essential metabolic reactions in the body.Lieberman, S, Bruning, N (1990). The Real Vitamin & Mineral Book. NY: Avery Group, 3.