This is the 1204th most frequent French word.
trente
"Trente" means "thirty" in English.
In this sentence, 'trente' specifies the numeric value of thirty as part of a time expression.
Le cours commence à trente heures.
The class starts at thirty hours.
Here, 'trente' expresses the exact number of guests in the context of counting.
Il y avait trente invités à la fête.
There were thirty guests at the party.
In this case, 'trente' indicates a quantitative duration of time.