"Η σημαντική εμπειρία."

Translation: The important experience.

[Luke_5.1991]

Related to "empirical!"

[nauajos]

εν (with) + πείρα (experience) = έμπειρος (experienced) --> εμπειρία (experience) ! However, the meanings are different: I had an experience = Είχα μια εμπειρία, I have experience = Έχω πείρα. εμπειρικός --> empirical .