Of course the word chaos is used in rather a vague sense by a lot of writers, but in physics it means a particular phenomenon, namely that in a nonlinear system the outcome is often indefinitely, arbitrarily sensitive to tiny changes in the initial condition.
-- Murray Gell-Mann
   
Murray Gell-Mann   Name:
Murray Gell-Mann
Type:
Physicist
Nationality:
American
Birth:
September 15, 1929
https://www.nutquote.com/quote/Murray_Gell-Mann