Usage Note
Troisième is both an ordinal adjective ('third floor' = troisième étage) and a noun (le troisième = 'the third one'). In French schools, la troisième is the final year of collège (roughly age 14-15), equivalent to Year 9 in the UK. The abbreviation is 3e or 3ème.
Examples
"Il habite au troisième étage de l'immeuble."
Natural Translation
He lives on the third floor of the building.

Free starter pack
Building your French vocabulary?
Get the 100 most common French words as a free PDF — one email, no spam.
Related Words
Explore French by topic