Gr. ἀκρο- combining form of ἄκρος a. terminal, highest, topmost; sb. a tip, point, extremity, peak, summit; as in ἀκρό-λιθος stone-tipped, ACROLITH; ἀκρόπολις the highest city, ΑCROPOLIS; ἀκρόνυχ-ος happening at the point of night-fall, ACRONYCHAL. Largely used in its various senses to form modern technical terms.
