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Molecule 1

Definition: One of the very small invisible particles of which all matter is supposed to consist.

Molecule 2

Definition: The smallest part of any substance which possesses the characteristic properties and qualities of that substance, and which can exist alone in a free state.

Molecule 3

Definition: A group of atoms so united and combined by chemical affinity that they form a complete, integrated whole, being the smallest portion of any particular compound that can exist in a free state; as, a molecule of water consists of two atoms of hydrogen and one of oxygen. Cf. Atom.

molecule 4

Definition: (nontechnical usage) a tiny piece of anything

molecule 5

Definition: (physics and chemistry) the simplest structural unit of an element or compound

 

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