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nipponium

nipponium noun: a chemical element, supposed to be the then-undiscovered technetium, but later identified as rhenium.

Noun

nipponium (uncountable)

  1. (dated) A chemical element, supposed to be the then-undiscovered technetium, but later identified as rhenium.
    • Element between molybdenum and ruthenium (perhaps Ogawa's nipponium)1923, Ulick R. Evans, Metals and metallic compounds, page 362
    • Tiede at Berlin University told Toshiyuki Majima that nipponium might be rhenium when the latter visited him in 1938.2008, Proceedings of the Japan Academy: physical and biological sciences, volume 84, page 237

Origin of nipponium

From Nippon + -ium. Doublet of nihonium.

Questions about nipponium

What does nipponium mean?
Nipponium means a chemical element, supposed to be the then-undiscovered technetium, but later identified as rhenium.
What part of speech is nipponium?
Nipponium is a noun.

Words near nipponium in the dictionary

  1. Nipponbashi
  2. Nipponese
  3. Nipponic
  4. Nipponism
  5. Nipponisms
  6. nipponium
  7. Nipponization
  8. nipponize
  9. nipponized
  10. nipponizes
  11. nipponizing

Source and license

Adapted from Wiktionary: nipponium (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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