In the Nordic Tradition: IS Y Ice Contraction Fixation Ego Aquarius
 Meaning: Ice
Symbolises: Winter, the hunt
Mythology: Skadi (The Ice Queen of Hans Christian Anderson)
Fylgja: Polar Bear, Arctic fox, Ptarmigan
Class: Yarl
Tree: Juniper
Plant: Mugwort
Old Norwegian Rune Rhyme:
Ice we call the broad bridge;
The blind need to be led.
In the Celtic tradition
I is Male 
S is Female
IS is male and female combined
In the Indian tradtion
ish or Iz is the basis of Ishvara and Izvara
In the Christian tradtion
IS or IC is Jesus and combines with H  in IHS