Definition of photography - a serious question

[Caveman]

It seems to me that a large number of people is not happy with the 
current dictionary definition of the word "photography". It appears that 
they would like it to include more than the traditional prints obtained 
 "on sensitized surfaces by the chemical action of light".

So, here is a serious question. If *you* had to write a contemporary 
dictionary definition for "photography", what would it be ? There's only 
one rule to it (as for any definition): it has to be at the same time 
inclusive (i.e. include everything that should be called photograph) and 
exclusive (i.e. exclude everything that should not be called so).

Any takes ?

cheers,
caveman