Dictionary

n.
1.an abstract part of something
2.any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
3.an artifact that is one of the individual parts of which a composite entity is made up
4.one of four substances thought in ancient and medieval cosmology to constitute the physical universe
5.the most favorable environment for a plant or animal
6.the situation in which you are happiest and most effective
7.a straight line that generates a cylinder or cone

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