Iris, the daughter of Thaumus (i.e. wonder) and of the ocean nymph Electra (i.e. splendour); was the goddess of the rainbow, and as such the messenger of the gods, particularly of Zeus and Hera, the appearance of the rainbow being regarded as a sign that communications of good omen were passing between heaven and earth, as it was to Noah that they would continue to be kept up; she is represented as dressed in a long wide tunic, over which hangs a light upper garment, and with golden wings on her shoulders.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Iridium * Irkutsk