Norwegian Bokmål

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Norwegian Wikipedia has an article on:
Wikipedia no

Etymology

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From rom +‎ tid.

Noun

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romtid f or m (definite singular romtida or romtiden, uncountable)

  1. (physics) spacetime, space-time

Norwegian Nynorsk

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Norwegian Nynorsk Wikipedia has an article on:
Wikipedia nn

Etymology

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From rom +‎ tid.

Noun

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romtid f (definite singular romtida, uncountable)

  1. (physics) spacetime, space-time