Word.ws English Dictionary

feynmanium

feynmanium noun: the hypothetical chemical element with atomic number 137.

Noun

feynmanium (uncountable)

  1. The hypothetical chemical element with atomic number 137.
    Synonyms:
    Fy, untriseptium, Uts

Synonyms of feynmanium

Origin of feynmanium

From Feynman + -ium. After Richard Feynman, who used a back-of-the-envelope calculation using classical physics to determine that element 137 is the last stably neutrally charged element, as larger elements would need electrons traveling faster than light to become neutral. (This problem goes away when relativity is considered.)

Questions about feynmanium

What does feynmanium mean?
Feynmanium means the hypothetical chemical element with atomic number 137.
What part of speech is feynmanium?
Feynmanium is a noun.

Words near feynmanium in the dictionary

  1. Feynman diagram
  2. Feynman diagrams
  3. Feynman point
  4. Feynman-Smoluchowski ratchet
  5. Feynmanian
  6. feynmanium
  7. feys
  8. fez
  9. Fez-Meknes
  10. fezakinumab
  11. fezes

Source and license

Adapted from Wiktionary: feynmanium (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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