(acronym) Karlsruhe Shower Core and Array Detector, a cosmic ray experiment in Karlsruhe, Germany.

(politics) Abbreviation of National Party. / (aviation) Abbreviation of North Atlantic Tracks.

(intransitive) To side with the Athenians. / (intransitive) To use the Attic idiom or style; to conform to the customs or modes of thought of the Athenians.

(cytology, dated) The substance from which attraction spheres develop in mitotic cell division, and of which they consist.