[ˈɛksɒn], (Noun)

Definitions:
- a segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence


Phrases:

Origin:
1970s: from expressed (see express) + -on

[ˈɛksɒn], (Noun)

Definitions:
- each of the four officers acting as commanders of the Yeomen of the Guard


Phrases:

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