Τίγρις
Could not find Τίγριδι in Logeion dictionaries.
Τίγριδι Proper-name noun: masculine dative singular of Τίγρις
Τίγρις — Tigris R (Mesopotamia), Pleiades 912964
Τίγρις, ιδος, ιδι, ιδα, (ὁ) c. le préc. Str. 521, 522, etc. ||
➳ Gén. Τίγριος, Str. 521, 522, etc. ; ion. ιος, ι, ιν, Hdt. 1, 189 ; 5, 52 ; Τίγρεως, DS. 17, 55, etc.