Standard Lemma guide

cistron

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.

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Pronunciation

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1

noun

Meaning 1

The unit of hereditary material (e.g. DNA) that encodes one protein.

Definition source: English Wiktionary via Wiktextract

Examples

  • Holonym: locus
  • Near-synonym: gene (often synonymous)

Meaning relationships

Synonyms: gene

Antonyms: none provided

2

noun

Meaning 2

(genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity

Definition source: Princeton WordNet 3.0

Examples

  • genes were formerly called factors

Meaning relationships

Synonyms: gene, factor

Antonyms: none provided

Broader terms: sequence

Narrower terms: dominant gene, allele, allelomorph, genetic marker, homeotic gene, lethal gene, linkage group, linked genes, modifier, modifier gene, mutant gene, nonallele, operator gene, oncogene, transforming gene, polygene, proto-oncogene, recessive gene, regulatory gene, regulator gene, repressor gene, structural gene, suppressor, suppresser, suppressor gene, suppresser gene, transgene, X-linked gene, Y-linked gene, holandric gene

History

Etymology

Coined by American molecular biologist Seymour Benzer in 1957, from cis + trans + -on. Named in the context of using a "cis-trans comparison" for identifying " [...] whether two mutants, having similar defects, are indeed defective in the same way."