Exon

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɛksɒn/US:USA pronunciation: respellingUSA pronunciation: respelling(ek′son)


WordReference Random House Unabridged Dictionary of American English © 2026
ex•on1  (ek′son),USA pronunciation n. 
  1. British Terms(in Britain) one of four yeomen of the guard who act as commanding officers in the absence of higher authority. Also called exempt. 
  • earlier exant, for French exempt (spelling, spelled altered to show French pronunciation) 1645–55

ex•on2  (ek′son),USA pronunciation n. [Genetics.]
  1. Geneticsany portion of an interrupted gene that is represented in the RNA product and is translated into protein. Cf. intron.
  • ex(pressed sequence) + -on1 1975–80

Collins Concise English Dictionary © HarperCollins Publishers::
exon / ˈɛksɒn/
  1. one of the four officers who command the Yeomen of the Guard
Etymology: 17th Century: a pronunciation spelling of French exempt exempt
'Exon' also found in these entries (note: many are not synonyms or translations):
exempt - exonerate - intron - unexonerated - unexonerative

Forum discussions with the word(s) "Exon" in the title:


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