| 单词 | allantoin |
| 释义 | allantoin[ uh-lan-toh-in ] / əˈlæn toʊ ɪn / noun Biochemistry, Pharmacology.a white powder, C4H6N4O3, produced by oxidation of uric acid and the major excretory product of purine degradation in many vertebrates: used medicinally to heal skin ulcers and in lotions, lipsticks, etc., for its soothing effect. Origin of allantoin1835–45; allanto(is) + -in2; so named because it is found in the fluid of the allantois Words nearby allantoinallantoic stalk, allantoic vesicle, allantoid, allantoid membrane, allantoidoangiopagous twins, allantoin, allantoinuria, allantois, alla prima, allargando, all-around Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for allantoinallantoin / (ˌælənˈtəʊɪn) / nouna substance derived from the secretions of snails and contained in some plants, used in skin care products and valued for its soothing properties Word Origin for allantoinC19: from allantois 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 allantoinallantoin [ ə-lăn′tō-ĭn ] n.A substance present in allantoic fluid, amniotic fluid, and fetal urine. A crystalline oxidation product of uric acid produced in vertebrate purine metabolism and used medicinally to promote tissue growth. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
| 随便看 |
英语词典包含192737条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。