one who has attained (relative) achievement perfected, accomplished, mastering, in phrase abhiññā˚ one who masters special knowledge SN.i.167; Dhp.423; Iti.47 = Iti.61 = Iti.81; AN.i.165; cp. Dhp-a.iv.233: “niṭṭhānaṃ patto vusita-vosānaṃ vā patto etc.”

vi + osita, pp. of ava + sā. See also vusita & vyosita;