iridal, a. rare.
(ˈaɪərɪdəl)
[f. as prec. + -al1.]
1. Of or belonging to the rainbow.
| 1837 Whewell Hist. Induct. Sc. (1857) II. 280 Descartes came far nearer the true philosophy of the iridal colours. |
2. Med. Of or pertaining to the iris of the eye; = iridic a.2
| 1830 W. Mackenzie Pract. Treat. Dis. Eye xix. 770 One anatomist supposes that he has traced branches from the ciliary or iridal nerves, where they lie between the sclerotica and choroid. 1879 Brain I. 8 In addition to..absence of iridal susceptibility to influence from the other eye, we have..failure of accommodation. 1965 Ophthalmologica CXLIX. 35 Although the iridal tumour revealed no sign of malignancy, it metastasized to the ipsilateral cervical lymph nodes prior to the enucleation of the eyeball. |