<p><strong>Noun</strong></p><ul><li>the substance or substances of which any physical object consists or is composed: the matter of which the earth is made.</li><li>physical or corporeal substance in general, whether solid, liquid, or gaseous, especially as distinguished from incorporeal substance, as spirit or mind, or from qualities, actions, and the like.</li><li>something that occupies space.</li><li>a particular kind of substance: coloring matter.</li><li>a situation, state, affair, or business: a trivial matter.</li><li>an amount or extent reckoned approximately: a matter of 10 miles.</li><li>something of consequence: matter for serious thought.</li><li>importance or significance: decisions of little matter.</li><li>difficulty; problem; trouble: There is something the matter with the car.</li><li>ground, reason, or cause: a matter for complaint.</li><li>the material or substance of a discourse, book, etc., often as distinguished from its form.</li><li>things put down in words, especially printed: reading matter.</li><li>things sent by mail: postal matter.</li><li>a substance discharged by a living body, especially pus.</li><li>that which by integrative organization forms chemical substances and living things.</li><li>that which relates to form as potentiality does to actuality.</li><li>statement or allegation.</li><li>material for work; copy.</li><li>type set up.</li><li>the concept of substance shaped by the limitations of the human mind.</li></ul><p><strong>Verb</strong></p><ul><li>to be of importance; signify: It matters little.</li></ul>