PTS Pali-English dictionary - The Pali Text Society's Pali-English dictionary
Ussa
Ussa,(adj.) [der.fr.ud = *ud-s(y)a,in analogy to oma fr.ava; but taken by Kern,Toev.s.v.as an abbreviated ussada] superior,higher (opp.oma inferior) A.III,359; Sn.860 (= Nd1 251 with spelling ossa),954.(Page 156)