There are 2 definitions of exon in English:

exon1

Line breaks: exon
Pronunciation: /ˈɛksən
 
/

noun

Biochemistry
  • A segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence. Compare with intron.
    More example sentences
    • All of them contained usually short fragments of coding sequences corresponding to exons of single-copy genes.
    • Sequence data for each gene encompassed all coding exons and the intervening introns.
    • He concluded that recombination had separated the genealogical histories of introns and exons within these genes.

Derivatives

exonic

adjective

Origin

1970s: from expressed (see express1) + -on.

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Definition of exon in:

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space

There are 2 definitions of exon in English:

exon2

Line breaks: exon
Pronunciation: /ˈɛksɒn
 
/

noun

British
  • Each of the four officers acting as commanders of the Yeomen of the Guard.

Origin

mid 18th century: representing the pronunciation of French exempt 'free from', from Latin exempt- 'taken out', from the verb eximere, so named because these officers were exempt from normal duties.

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Definition of exon in:

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space