trace element
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trace element
n.
1. A chemical element present in tiny amounts: trace elements in ground water.
2. A chemical element required in minute quantities by an organism to maintain proper physical functioning.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
trace element
n
(Biology) any of various chemical elements, such as iron, manganese, zinc, copper, and iodine, that occur in very small amounts in organisms and are essential for many physiological and biochemical processes
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
trace′ el`ement
n.
1. any chemical element that is required in minute quantities for physiological functioning.
2. a substance that occurs naturally only in minute amounts in the earth's crust.
Also called trace′ min`eral.[1935–40]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
trace element
(trās) An element present in an organism in only very small amounts but essential for normal metabolism. Iodine and cobalt, for example, are trace elements required by humans.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun | 1. | ![]() chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
trace element
, trace mineraln → Spurenelement nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
trace element
n → oligoelementoCollins Italian Dictionary 1st Edition © HarperCollins Publishers 1995