1) Containing element number 77 2) Metal 3) Metallic element 4) Of a pupil site 5) Of or containing iridium 6) Pertaining to a rainbow 
of, like or pertaining to the iris of the eye
• (a.) Of or pertaining to iridium; -- said specifically of those compounds in which iridium has a relatively high valence. • (a.) Of or pertaining to the iris of the eye.
(i-rid´ik) pertaining to the iris.
I·rid'ic adjective Of or pertaining to the iris of the eye. 
[adj] - of or containing iridium 2. [adj] - of or relating to the iris of the eye
iridic Of or relating to the iris of the eye.
adjective of or relating to the iris of the eye
of or containing iridium, esp. in the tetravalent state.