（asta^da/sa-dha^tavah）. （1） The eighteen compositional elements of human existence. The six sense faculties， their six objects and the six consciousnesses 六识. A way of pointing out the six intrinsic corresponding relationships between the six faculties （六根） and their objects （六尘） as separate functions. （2） In Consciousness-only theory， a classification of the one hundred dharmas in 18 elements. The first ten are the five sense organs and their objects. Added to this is the category of "mind elements" （manas and a^laya consciousness）， the "dharma realm" （mental function dharmas， dharmas not concomitant with mind， and unconditioned dharmas）， plus the six consciousnesses （六识）， totaling eighteen.