What is the Greek meaning of preeminent?

There isn't a single, direct Greek word translation for "preeminent." The meaning of "preeminent" — meaning surpassing others in excellence or importance — requires combining Greek elements to express the full concept.

You'd need to use a combination of words, for example:

* πρῶτος (protos): first, foremost

* ἐξέχων (exechōn): excelling, outstanding

* κράτιστος (kratistos): strongest, best

A possible, albeit slightly awkward, rendering might be something like πρῶτος καὶ ἐξέχων (protos kai exechōn) - "first and excelling." Other combinations emphasizing "best" or "most important" could also be used, depending on the precise nuance.

Therefore, there's no perfect Greek equivalent; it necessitates a phrase rather than a single word.