• Webster's Revised Unabridged Dictionary
    • a Iridal Of or pertaining to the iris or rainbow; prismatic; as, the iridal colors.
    • ***
Century Dictionary and Cyclopedia
    • iridal Belonging to or resembling the rainbow.
    • iridal Relating to the iris of the eye.
    • ***
Chambers's Twentieth Century Dictionary
    • adjs Iridal exhibiting the colours of the iris or rainbow: prismatic
    • ***


Webster's Revised Unabridged Dictionary
L. iris, iridis, rainbow. See Iris
Chambers's Twentieth Century Dictionary
L. iris, iridis—Gr. iris, iridos, the rainbow.


In literature:

Total absence of both irides has been seen in a man of eighteen.
"Anomalies and Curiosities of Medicine" by George M. Gould
His lids came down on the lower rims of his irides.
"Ulysses" by James Joyce
No crescent irides showed beneath the half-shut lids.
"Alias The Lone Wolf" by Louis Joseph Vance
The irides of the eyes of this bird were of a beautiful bright yellow colour.
"The Natural History of Selborne, Vol. 1" by Gilbert White
Their claws, their teeth, half uncovered, and even the bright irides of their shining eyes were seen distinctly.
"The Boy Hunters" by Captain Mayne Reid
The black stared, with the opalescent whites of his eyes forming rings around his irides.
"King o' the Beach" by George Manville Fenn
Both pupils and irides were black, and glistened like the eyes of a weasel.
"The Quadroon" by Mayne Reid
So lovely were those eyes, that had their irides been blue instead of brown, I might have fancied they were Lilian's!
"The Wild Huntress" by Mayne Reid
Female eight inches and seventh eighths long; marked like the male, but not so brilliant; irides hazel.
"Incidents of Travel in Yucatan, Vol. II." by John L. Stephens
It rose almost to the blue irides of her eyes, still glistening with tears.
"The Child Wife" by Mayne Reid

In poetry:

He had passed, inconscient, full gaze,
The wide-branded irides
And botticellian sprays implied
In their diastasis;
"MAUBERLEY" by Ezra Pound
Mastro Spaghi taceva--fissandola nel viso;
E nei suoi occhi azzurri--vedeva un paradiso.
Un'iride ideale--di memorie e d'amore,
Di dolci desiderii--soffocati nel cuore.
"Mastro Spaghi" by Ferdinando Fontana

In news:

The glass tiles come in 20 iridized colors, in versatile sizes and color blends.

In science:

The perovskite iridates are isostructural to the cuprate parent compounds and have been drawing increasing attention in recent years.
Bilayer Twisted Hubbard Model for Sr3Ir2O7
The iridates provide the platform for investigation of the low energy electronic structures of the Mott physics.
Bilayer Twisted Hubbard Model for Sr3Ir2O7
The similarity and distinction between the cuprates and perovskite iridates can improve our understanding of the Mott physics on the two dimensional square lattice.
Bilayer Twisted Hubbard Model for Sr3Ir2O7
The perovskite iridates have IrO2 planes which determine the low energy electronic properties, similar to the parent compound of cuprates.
Bilayer Twisted Hubbard Model for Sr3Ir2O7
Pyrochlore iridates: A2 I r2O7 , form a sequence of materials (as the element A is changed) with increasingly strong interactions. A can be taken to be a Lanthanide element or Yttrium.
Beyond Band Insulators: Topology of Semi-metals and Interacting Phases