Standard Lemma guide

isotone

adj · noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

adj

Meaning 1

monotone nondecreasing.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any of a number of nuclides of different elements that have the same number of neutrons.

Definition source: English Wiktionary via Wiktextract

Qualifier: nuclear physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Reinterpretation of the p in isotope as standing for proton, leading to a replacement with the letter n for neutron. Coined by German physicist Kurt Guggenheimer in 1934.

Across languages

Translations

7 source translations are retained for this English entry.

  • French: isotone — Any of a number of nuclides of different elements
  • German: Isoton — Any of a number of nuclides of different elements
  • Italian: isotono — Any of a number of nuclides of different elements
  • Polish: izoton — Any of a number of nuclides of different elements
  • Portuguese: isótono — Any of a number of nuclides of different elements
  • Slovak: izotón — Any of a number of nuclides of different elements
  • Spanish: isótono — Any of a number of nuclides of different elements