[ahn root, en; Fr. ahn root] 
| on the way: The plane crashed en route from Cairo to Athens. |
| en route (ŏn rōōt', ěn) adv. & adj. On or along the way: We are en route to the museum. The store is en route. [French : en, on + route, route.] |
en route
On or along the way, as in We'll pick up Dan en route to the restaurant, or We can finish our discussion en route. This French term was adopted into English in the late 1700s.