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Element
Pronunciation
Definition 1
A basic part of a whole. In chemistry, refers to a simple substance that cannot be broken down into smaller parts or changed into another substance. The basic part of an element is an atom, which contains protons, neutrons, and electrons. All atoms of an element have the same number of protons. Examples of elements are hydrogen, carbon, oxygen, nitrogen, and calcium. (NCI Dictionary)
Definition 2
An artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system. (NCI Thesaurus)
Definition 3
A substance whose atoms all have the same atomic number, that cannot be divided into simpler substances, and that singly or in combination constitute all matter. (NCI Thesaurus)
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