Dictionary Definition:
Atthiya (adj.) ( -- ˚) [= atthika] having a purpose or end S iii.189 (kim˚ for what purpose?); A v.1 sq. (id.), 311 sq.; Th 1, 1097 (att˚ having one's purpose in oneself), 1274; Sn 354 (yad atthiyaŋ on account of what).