yang 
/ˈjɑ:ŋ, ˈjæŋ/ noun
/ˈjɑ:ŋ, ˈjæŋ/ noun [noncount] in Chinese philosophy : one of the two forces that together form everything that exists : the male principle of the universe that is considered light and active and is associated with heaven — compare yin
the yin and yang — see yin
