Norwegian Bokmål

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Norwegian Wikipedia has an article on:
Wikipedia no

Alternative forms

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Etymology

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From periode +‎ system.

Noun

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periodesystem n (definite singular periodesystemet)

  1. periodic table (chart of the chemical elements by atomic number)

Norwegian Nynorsk

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Norwegian Nynorsk Wikipedia has an article on:
Wikipedia nn

Alternative forms

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Etymology

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From periode +‎ system.

Noun

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periodesystem n (definite singular periodesystemet)

  1. periodic table (as above)