Udi (or udī) is artificial adjective formation from udeti, meaning "rising excelling", in explanation of ekodi at Vism 156 (udayatī ti udi uṭṭhapetī ti attho).
udi 2 P. 1 To rise (as a star, cloud &c.) ( fig. also); come up; udeti pUrvaM kusumaM tataH PalaM Ś. 7. 30 ; udeti savitA tAmrastAmra evAstamoti ca Subhāṣ. ; Māl. 2. 10 ; Ki. 2. 36 ; Bk. 6. 110 , 8. 35 , 18. 20 ; to be ( pb ) seen, appear. 2 To be produced, come out or arise from, spring or proceed from; uditadayaH Dk. 13 ; puRyaH kfSAnorudiyAya DUmaH R. 7. 26 ; uditaSriyaM 1. 93 v. l. ; Ś. 1. 26. 3 To go out, escape. 4 To start up; R. 17. 77. 5 To rise up against; Ku. 2. 57 ; ya enamudIyAdraTI Mb.