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Periodic law

 - 4 dictionary results

pe⋅ri⋅od⋅ic law

  [peer-ee-od-ik, peer-]
Use Periodic law in a Sentence
–noun Chemistry.
1. the law that the properties of the elements are periodic functions of their atomic numbers.
2. Also called Mendeleev's law. (originally) the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights.
Origin:
1870–75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pe·ri·od·ic law   (pĭr'ē-ŏd'ĭk)
n.   Chemistry
The principle that the properties of the elements recur periodically as their atomic numbers increase.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: periodic law
Function: noun
: a law in chemistry: the elements when arranged in the order of their atomic numbers show a periodic variation of atomicstructure and of most of their properties called also Mendeleev's law
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

periodic law n.
The principle that properties of elements recur periodically as atomic numbers increase.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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