form of matter
nounUK /fɔːm əv ˈmætə/
US /fɔːrm əv ˈmætər/
A form of matter is one of the ways stuff can be, like solid, liquid, or gas.
Ice is a solid form of matter, and water is a liquid form of matter.
OTHER MEANINGS
2. A particular shape or type of something.
The cloud changed into the form of a dragon.
3. A document with blank spaces to fill in.
Please fill out this form at the front desk.
4. To make or create something.
The children formed a circle and held hands.