Question

hich state of matter has a definite volume, but does not have a definite shape?

Answer 1

The truth is, no state of matter has a definite volume; any substance can be compressed, even if a tiny bit.
I assume the answer the writer of the question is looking for is the less compressible of the fluid states of matter.

Answer 2

@Cheese3.1416

Before answering like that, dont' you think you should see what level of physics he is dealing with? :P

The truth is everything we have learnt is wrong (its just an approximation)

Answer 3

liquid