periodic system

American  

[peer-ee-od-ik, peer-] / ˈpɪər iˈɒd ɪk, ˌpɪər- /

noun

Chemistry.

1. a system of classification of the elements based on the periodic law.

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periodic system British  

/ ˌpɪərɪˈɒdɪk /

noun

1. the classification of the elements based on the periodic law

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Etymology

Origin of periodic system

First recorded in 1870–75

Example Sentences

It cited aged software, periodic system failures, mistakes in programming and overreliance on manual input of data, The Washington Post reported Sunday.

From Washington Post

The mechanics of the entire transplant system must be overhauled, the review concluded, citing aged software, periodic system failures, mistakes in programming and overreliance on manual input of data.

From Washington Post

But, Scerri explains, the Russian chemist was a master storyteller and, compared to Meyer and other competitors, a more effective evangelist for the periodic system.

From The New Yorker

The very first hint of chemical periodicity was announced by a French engineer, Alexandre-Émile de Chancourtois, who also designed a three-dimensional periodic system that he named the telluric screw.

From Scientific American

The periodic system has two levels of classification: a primary level, based on atomic numbers of the elements, and a secondary one, based on chemical properties.

From Scientific American