abhidhamma
Abhidhamma，[abhi + dhamma] the “special Dhamma，” i. e.，1. theory of the doctrine，the doctrine classified，the doctrine pure and simple （without any admixture of literary grace or of personalities，or of anecdotes，or of arguments ad personam），Vin.I，64，68； IV，144； IV，344. Coupled with abhivinaya，D.III，267； M.I，272. -- 2. （only in the Chronicles and Commentaries） name of the Third Piṭaka，the third group of the canonical books. Dpvs.V，37； PvA.140. See the detailed discussion at DA.I，15，18 sq. [As the word abhidhamma standing alone is not found in Sn.or S or A，and only once or twice in the Dialogues，it probably came into use only towards the end of the period in which the 4 great Nikāyas grew up.]
--kathā discourse on philosophical or psychological matters，M.I，214，218； A.III，106，392. See dhammakathā. （Page 65）