n.1. A fundamental, essential, or irreducible constituent of a composite entity.
2. elements The basic assumptions or principles of a subject.
3. Mathematics a. A member of a set.
b. A point, line, or plane.
c. A part of a geometric configuration, such as an angle in a triangle.
d. The generatrix of a geometric figure.
e. Any of the terms in the rectangular array of terms that constitute a matrix or determinant.
4. Chemistry & Physics A substance composed of atoms having an identical number of protons in each nucleus. Elements cannot be reduced to simpler substances by normal chemical means. See Periodic Table (pages 131X-131X).
5. One of four substances, earth, air, fire, or water, formerly regarded as a fundamental constituent of the universe.
6. Electricity The resistance wire in an electrical appliance such as a heater or an oven.
7. elements The forces that constitute the weather, especially severe or inclement weather: outside paint that had been damaged by the elements.
8. An environment naturally suited to or associated with an individual: He is in his element when traveling. The business world is her element.
9. A distinct group within a larger community: the dissident element on campus.
10. A part of a military force, especially:
a. A ground unit in an air force comparable to a platoon.
b. A unit of an air force equal to two or three aircraft.
11. elements The bread and wine of the Eucharist.