Standard Lemma guide

intron

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /ˈɪntɹɒn/
  • CMU ARPABET: IH1 N T R AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing and rapidly degraded.

Definition source: English Wiktionary via Wiktextract

Topics: biology, genetics, medicine, natural-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

sequence of a eukaryotic gene's DNA that is not translated into a protein

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: noncoding DNA

Antonyms: exon

Broader terms: deoxyribonucleic acid, desoxyribonucleic acid, DNA

History

Etymology

From intragenic region.

Across languages

Translations

11 source translations are retained for this English entry.

  • Chinese Mandarin: 内含子 (nèihánzǐ) — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • French: intron — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Hungarian: intron — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Icelandic: innröð — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Italian: introne — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Khmer: អន្តោរាណូ (ɑɑntaorɔn) — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Portuguese: íntron — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Russian: интро́н (intrón) — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Spanish: intrón — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Swedish: intron — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing
  • Turkish: intron — genetics: portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing