provitamin
(ʊˈvaɪ tə mɪn;)
Random House Webster's College Dictionary
a substance that an organism can transform into a vitamin, as carotene, which is converted to vitamin A in the liver.
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provitamin
(provitamin)
Princeton's WordNet
vitamin precursor; a substance that is converted into a vitamin in animal tissues
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haworth
(Haworth, Sir Walter Norman Haworth)
Princeton's WordNet
English biochemist who was a pioneer in research on carbohydrates; when he synthesized vitamin C he became the first person to synthesize a vitamin artificially (1883-1950)
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pantothenic acid
(pantothenic acid, pantothen)
Princeton's WordNet
a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods
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pantothen
(pantothenic acid, pantothen)
Princeton's WordNet
a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods
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sir walter norman haworth
(Haworth, Sir Walter Norman Haworth)
Princeton's WordNet
English biochemist who was a pioneer in research on carbohydrates; when he synthesized vitamin C he became the first person to synthesize a vitamin artificially (1883-1950)
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vitamin d
(ɪn, -ˌmin)
Random House Webster's College Dictionary
a form of vitamin D, C
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megadose
(ˈmɛg əˌdoʊs)
Random House Webster's College Dictionary
a very large dose, as of a vitamin.
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tocopherol
(ʊˈkɒf əˌrɔl, -ˌrɒl)
Random House Webster's College Dictionary
any of several oils that constitute vitamin E.
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biotin
(ˈbaɪ ə tɪn)
Random House Webster's College Dictionary
a crystalline, water-soluble vitamin, C
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thiamine
(ɪn)
Random House Webster's College Dictionary
a crystalline, water-soluble vitamin-B compound, C
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intrinsic factor
(ɪnˈtrɪn sɪk, -zɪk)
Random House Webster's College Dictionary
a gastric glycoprotein involved in the absorption of vitamin B
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ascorbic acid
(əˈskɔr bɪk)
Random House Webster's College Dictionary
a white, crystalline, water-soluble vitamin, C
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vitamin b complex
(ɪn, -ˌmin)
Random House Webster's College Dictionary
an important group of water-soluble vitamins containing vitamin B
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vitamin d
(ɪn, -ˌmin)
Random House Webster's College Dictionary
a form of vitamin D obtained by ultraviolet irradiation of ergosterol.
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pernicious anemia
(ərˈnɪʃ əs)
Random House Webster's College Dictionary
a severe anemia associated with inadequate intake or absorption of vitamin B
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beriberi
(ˈbɛr iˈbɛr i)
Random House Webster's College Dictionary
a disease of the peripheral nerves caused by a deficiency of vitamin B
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avidin
(ˈæv ɪ dɪn, əˈvɪd ɪn)
Random House Webster's College Dictionary
a protein of raw egg white that combines with the vitamin biotin and prevents its absorption.
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irradiation
(ɪˌreɪ diˈeɪ ʃən)
Random House Webster's College Dictionary
the use of x-rays or other forms of radiation for treatment of disease, manufacture of vitamin D, etc.
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pyridoxine
(ɪn)
Random House Webster's College Dictionary
a derivative of pyridine, required in forming hemoglobin and in preventing pellagra; vitamin B
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riboflavin
(ˌraɪ boʊˈfleɪ vɪn, ˈraɪ boʊˌfleɪ-, -bə-)
Random House Webster's College Dictionary
a vitamin B complex factor essential for growth, occurring as a yellow crystalline compound, C
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nicotinamide
(ˌnɪk əˈtɪn əˌmaɪd, -mɪd, -ˈti nə-)
Random House Webster's College Dictionary
a soluble crystal amide of nicotinic acid that is a component of the vitamin B complex and is present in most foods.
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tretinoin
(əˈtɪn oʊ ɪn)
Random House Webster's College Dictionary
a drug chemically related to vitamin A, used as a topical ointment to treat skin disorders, esp. acne.
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rickets
(ˈrɪk ɪts)
Random House Webster's College Dictionary
(used with a sing. v.) a childhood disease in which the bones soften from an inadequate intake of vitamin D and insufficient exposure to sunlight.
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bioassay
(ˌbaɪ oʊ ækˈtɪv ɪ ti)
Random House Webster's College Dictionary
determination of the biological activity or potency of a substance, as a vitamin or hormone, by testing its effect on the growth of an organism.
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folic acid
(ˈfoʊ lɪk, ˈfɒl ɪk)
Random House Webster's College Dictionary
a water-soluble vitamin that is converted to a coenzyme essential to purine and thymine biosynthesis: deficiency causes a form of anemia.
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scurvy
(ˈskɜr vi)
Random House Webster's College Dictionary
a disease marked by swollen and bleeding gums, livid spots on the skin, and prostration and caused by a lack of vitamin C.
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kwashiorkor
(ˌkwɑ ʃiˈɔr kɔr, -kər)
Random House Webster's College Dictionary
a disease, chiefly of children, caused by severe protein and vitamin deficiency and characterized by retarded growth, potbelly, and anemia.
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antioxidant
(ˌæn tiˈɒk sɪ dənt, ˌæn taɪ-)
Random House Webster's College Dictionary
an enzyme or other organic substance, as vitamin E or beta carotene, capable of counteracting the damaging effects of oxidation in animal tissues.
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porphyrin
(ˈpɔr fə rɪn)
Random House Webster's College Dictionary
a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B
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