nt]
| 1. | 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. |
| 2. | Chemistry. one of a class of substances that cannot be separated into simpler substances by chemical means. See also chart under periodic table. |
| 3. | a natural habitat, sphere of activity, environment, etc.: to be in one's element; Water is the element of fish. |
| 4. | elements,
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| 5. | 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. |
| 6. | one of the substances, usually earth, water, air, and fire, formerly regarded as constituting the material universe. |
| 7. | Mathematics.
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| 8. | Geometry. one of the points, lines, planes, or other geometrical forms, of which a figure is composed. |
| 9. | Astronomy. any of the data required to define the precise nature of an orbit and to determine the position of a planet in the orbit at any given time. |
| 10. | Electricity. an electric device with terminals for connection to other electrical devices. |
| 11. | Radio. one of the electrodes in a vacuum tube. |
| 12. | Astrology. any of the four triplicity groupings of signs: fire, earth, air, or water. |
| 13. | Optics. any of the lenses or other components constituting an optical system. |
| 14. | Grammar. any word, part of a word, or group of words that recurs in various contexts in a language with relatively constant meaning. |

In chemistry, any material (such as carbon, hydrogen, iron, or oxygen) that cannot be broken down into more fundamental substances. Each chemical element has a specific type of atom, and chemical compounds are created when atoms of different elements are bound together into molecules. There are 119 chemical elements whose discovery has been claimed; 92 occur in nature, and the rest have been produced in laboratories.
element el·e·ment (ěl'ə-mənt)
n.
A substance that cannot be reduced to simpler substances by normal chemical means and that is composed of atoms having an identical number of protons in each nucleus.
A fundamental, essential, or irreducible constituent of a composite entity.
element ") and an end tag ("
1. One of the items of data in an array.
2.
"), which are an unordered set of key-value bindings for that element. Both the start tag and end tag for an element typically contain the "tag name" (also called the "GI" or generic identifier) for that element.
In XML, an element is always represented either by an explicit start tag and end tag, or by an empty element tag ("").
Other kinds of SGML node are: a section of character data ("foo"), a comment (""), a markup declaration (""), or a processing instruction ("").
(2001-01-30)