Here is a short text about this translation and the fruit itself:
The English term "passionfruit" is a direct borrowing, but its French equivalent, le fruit de la passion , is a literal translation meaning "fruit of passion." Interestingly, the name has nothing to do with romantic passion. Instead, it refers to the Passion of Christ , because early Spanish missionaries in South America saw symbols of the Crucifixion in the flower's structure. passionfruit traduction
The English word translates into French as "fruit de la passion." Here is a short text about this translation