Word.ws English Dictionary

mesoionic compound

mesoionic compound noun: any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen).

Noun

mesoionic compound (plural mesoionic compounds)

  1. any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen).

Forms of mesoionic compound

pluralmesoionic compounds

Questions about mesoionic compound

What does mesoionic compound mean?
Mesoionic compound means any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen).
What part of speech is mesoionic compound?
Mesoionic compound is a noun.
What is the plural of mesoionic compound?
The plural of mesoionic compound is mesoionic compounds.

Words near mesoionic compound in the dictionary

  1. mesohyl
  2. mesohylar
  3. mesohyls
  4. mesohypothalamic
  5. mesoionic
  6. mesoionic compound
  7. mesoionic compounds
  8. mesoionics
  9. mesoisomer
  10. mesojejunal
  11. mesojunction

Source and license

Adapted from Wiktionary: mesoionic compound (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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