There are 2 main definitions of exon in English:

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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.
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.

Origin

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

Derivatives

exonic

1
adjective

Definition of exon in:

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There are 2 main definitions of exon in English:

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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.

Definition of exon in:

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