Tao
Concise Oxford English Dictionary © 2008 Oxford University Press:
Tao /taʊ, ˈtɑːəʊ/
▶noun (in Chinese philosophy) the absolute principle underlying the universe, combining within itself the principles of yin and yang and signifying the way, or code of behaviour, that is in harmony with the natural order.
– origin Chin., lit. ‘(right) way’.
'Tao' also found in these Oxford entries:

