| 单词 | niacin |
| 释义 | niacin[ nahy-uh-sin ] / ˈnaɪ ə sɪn / noun Biochemistry.nicotinic acid. Origin of niacinFirst recorded in 1935–40; ni(cotinic) ac(id) + -in2 Words nearby niacinNHL, NHS, NHTSA, Ni, NIA, niacin, niacinamide, Niagara, Niagara Falls, Niagara green, Niagara-on-the-Lake Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for niacinniacin / (ˈnaɪəsɪn) / nounanother name for nicotinic acid Word Origin for niacinC20: from ni (cotinic) ac (id) + -in Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for niacinniacin [ nī′ə-sĭn ] n.A crystalline acid that is a component of the vitamin B complex and is used to treat and prevent pellagra.nicotinic acid The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for niacinniacin [ nī′ə-sĭn ] A water-soluble organic acid belonging to the vitamin B complex that is important in carbohydrate metabolism. It is a pyridine derivative and is a precursor of the coenzyme NAD. Niacin is found in liver, fish, and whole-grain foods. Deficiency of niacin in the diet causes pellagra. Also called nicotinic acid. Chemical formula: C6H5NO2. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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