Alternative form of nonmaterial

Material that is good for making nuclear bombs: e.g., certain isotopes of uranium, neptunium, and plutonium.

(US, law) (in the context of support for terrorism) Any property, or service, including currency or monetary instruments or financial securities, financial services, lodging, training, expert advice or assistance, safe houses, false documentation or identification, communications equipment, facilities, weapons, lethal substances, explosives, personnel, and transportation, except medicine or religious materials

A material in its unprocessed, natural state considered usable for manufacture. / (figuratively) Any physical product serving as input to a factory or other installation which processes it.

A substance, natural or man-made, which is intrinsically dangerous or otherwise poses a safety hazard. Examples are materials which are explosive, poisonous, chemically active (including acids and other corrosives), radioactive, or biologically active (including human blood and other medical waste).

The branch of logic that focuses on the content of reasoning.

(law) a breach of contract sufficiently serious to destroy the contract / a breach of a treaty which releases other parties from any obligation under it

(philosophy, natural science) The stuff or matter of which something is made.

(law) A person with information alleged to be material concerning a criminal proceeding, and who therefore may be detained to insure their participation in such a proceeding.

plural of material witness