| 单词 | periodic law |
| 释义 | periodic law[ peer-ee-od-ik, peer- ] / ˈpɪər iˈɒd ɪk, ˌpɪər- / noun Chemistry.the law that the properties of the elements are periodic functions of their atomic numbers. 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 of periodic lawFirst recorded in 1870–75 Words nearby periodic lawperiodic attractor, periodic decimal, periodic disease, periodic function, periodicity, periodic law, periodic motion, periodic neutropenia, periodic paralysis, periodic sentence, periodic system Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for periodic lawperiodic law / (ˌpɪərɪˈɒdɪk) / nounAlso called: Mendeleev's law the principle that the chemical properties of the elements are periodic functions of their atomic weights or, more accurately, of their atomic numbers 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 periodic lawperiodic 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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