The state of matter that has no definite shape OR volume is

Gases and Plasma state.

Explanation:

The state of matter that has no definite shape or volume are gases and plasma because they don't have fixed shape or volume so they can be compressed easily. They also have low density. The molecules of gases are far apart so they can easily fill the container and they can take the shape of the container also. As a result, gases can expand to fill the container.

Gases and plasmas have neither definite shapes nor definite volumes. Matter exists in different physical states. The molecules in a gas are far apart and can move freely and rapidly. As a result, gasses can expand to fill a container and have a low density. Gasses do not have a fixed shape or volume so they can be compressed, reducing the space between their particles.