Element

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.
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.

1. (Chemistry / Elements & Compounds) any of the 118 known substances (of which 93 occur naturally) that consist of atoms with the same number of protons in their nuclei Compare compound1 [1]
2. one of the fundamental or irreducible components making up a whole
3. a cause that contributes to a result; factor
4. any group that is part of a larger unit, such as a military formation
5. a small amount; hint an element of sarcasm in her voice
6. a distinguishable section of a social group he belonged to the stable element in the expedition
7. (Life Sciences & Allied Applications / Biology) the most favourable environment for an animal or plant
8. the situation in which a person is happiest or most effective (esp in the phrases in or out of one's element)
9. (Engineering / Electrical Engineering) the resistance wire and its former that constitute the electrical heater in a cooker, heater, etc.
10. (Electronics) Electronics another name for component [2]
11. (Philosophy) one of the four substances thought in ancient and medieval cosmology to constitute the universe (earth, air, water, or fire)
12. (Earth Sciences / Physical Geography) (plural) atmospheric conditions or forces, esp wind, rain, and cold exposed to the elements
13. (plural) the first principles of a subject
14. (Mathematics) Geometry a point, line, plane, or part of a geometric figure
15. (Mathematics) Maths
a. any of the terms in a determinant or matrix
b. one of the infinitesimally small quantities summed by an integral, often represented by the expression following the integral sign in <$>baf(x)dx, f(x)dx is an element of area
16. (Mathematics) Maths Logic one of the objects or numbers that together constitute a set
17. (Christianity / Ecclesiastical Terms) Christianity the bread or wine consecrated in the Eucharist
18. (Astronomy) Astronomy any of the numerical quantities, such as the major axis or eccentricity, used in describing the orbit of a planet, satellite, etc.
19. (Communication Arts / Broadcasting) one of the vertical or horizontal rods forming a television or VHF radio receiving aerial
20. (Physics / General Physics) Physics a component of a compound lens

Source

www.thefreedictionary.com