This is the 1445th most frequent Catalan word.
sa
"Sa" means "healthy" in English.
Here, 'sa' is used as an adjective meaning 'healthy' to describe 'dieta'.
Ella té una dieta molt sa.
She has a very healthy diet.
In Balearic dialects of Catalan, 'sa' is used as a definite article 'la'.
Van anar a sa casa aquest vespre.
They went to her house this evening.
Again, in Balearic dialects, 'sa' is used as a definitive article 'la', indicating 'zona'.