ronnametre

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English[edit]

Alternative forms[edit]

Etymology[edit]

ronna- +‎ metre

Noun[edit]

ronnametre (plural ronnametres) (British spelling)

  1. (metrology) An SI unit of length equal to 1027 metres. Symbol: Rm
    The observable universe is about one ronnametre in diameter.

Anagrams[edit]

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