- noun a physical substance
- noun a subject for discussion, concern or action
- noun a question or problem to be discussed
- verb to be important
- Anything which has a mass and occupies space. This ranges from subatomic particles through celestial bodies. Matter is understood to exist in five states, which are solid, liquid, gas, plasma, and Bose-Einstein condensates, although there may be others.
Information & Library Science
- noun a situation that you have to deal with