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Dictionary.com's 21st Century Lexicon
| Main Entry: | ys |
| Part of Speech: | n |
| Definition: | See yoctosecond |
Dictionary.com's 21st Century Lexicon
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American Heritage
Science Dictionary
Y
The symbol for yttrium.
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The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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