a component or constituent of a whole or one of the parts into which a whole may be resolved by analysis: Bricks and mortar are elements of every masonry wall.
Chemistry one of a class of substances that cannot be separated into simpler substances by chemical means. See also chart under periodic table
a natural habitat, sphere of activity, environment, etc.: to be in one's element; Water is the element of fish.
any group of people singled out within a larger group by identifiable behavior patterns, common interests, ethnic similarities, etc.: He worried that the protest rally would attract the radical element.
one of the substances, usually earth, water, air, and fire, formerly regarded as constituting the material universe.