Paperwork
JO
Letter by letterOfficialC1Meaning
Journal officiel, ou Jeux olympiques
Two very different meanings: the Journal officiel, where laws are published (« paru au JO »), and the Olympic Games (« les JO de Paris »). Number decides: singular for the gazette, plural for the Games.
How it is said
ji-o
Gender and article
le JO · masculine
Where you meet it
A legal text, a press article, the TV news.
Example
Le décret est paru au JO du 14 mars et entre en vigueur demain.
The decree appeared in the official gazette (JO) of 14 March and comes into force tomorrow.
In the DELF
reading C1
Watch out
Le JO (singular) is the gazette; les JO (plural) are the Games. In a synthesis, the gazette is the more likely.