Any material which is used for construction purposes.

A noun that refers to a substance.

(Roman Catholicism) An opinion that is objectively contradictory to the teachings of the Church, and as such heretical, but which is uttered by a person without the subjective knowledge of its being so.

plural of material heresy

Alternative form of materials science

plural of material science

(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

The amplification and distortion of small sounds for use in experimental noise music.

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