monoanion

M3O1N1O1A1N1I1O1N1

noun

Any anion carrying a single negative charge.

OriginEnglish anion ← Ancient Greek ἀνῐόν (anĭón) ← Proto-Hellenic *éimi →
Scrabble 11
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Meanings

nounmonoanion (plural monoanions)

plural monoanions

  1. chemistryAny anion carrying a single negative charge.

    The monoanion and dianion states are both potentially relevant at biological pH. The dianion strongly absorbs photons at 480 nm and gives a strong emission peak at 517 nm.

    2015 December 12, “A pH Sensitive High-Throughput Assay for miRNA Binding of a Peptide-Aminoglycoside (PA) Library”, in PLOS ONE, →DOI

Origin

  1. Proto-Indo-European*men-
  2. Proto-Hellenic*mónwos
  3. Ancient Greekμόνος (mónos)
  4. Ancient Greekμονο- (mono-)
  5. Englishmono-
  6. Proto-Indo-European*h₂en-
  7. Proto-Hellenic*aná
  8. Ancient Greekᾰ̓νᾰ́ (ănắ)
  9. Ancient Greekᾰ̓νᾰ- (ănă-)
  10. Proto-Indo-European*h₁ey-
  11. Proto-Indo-European*h₁éyti
  12. Proto-Hellenic*éimi
  13. Ancient Greekῐ̓όν (ĭón)
  14. Ancient Greekἀνῐόν (anĭón)
  15. Englishanion
  16. Englishmonoanion

From mono- + anion.

Full word history & related roots →
Cite this entry
APA

monoanion. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/monoanion

MLA

“monoanion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/monoanion. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “monoanion,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/monoanion.

Source: monoanion on Wiktionary, CC BY-SA 4.0.