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Definition of Molecule


  1. One of the very small invisible particles of which all matter is supposed to consist.
  2. 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.
  3. 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 Quotations

The magnitude of the atomic weight determines the character of the element, just as the magnitude of the molecule determines the character of a compound body.
Dmitri Mendeleev

It now seems certain that the amino acid sequence of any protein is determined by the sequence of bases in some region of a particular nucleic acid molecule.
Francis Crick

The detailed geometry of the coenzyme molecule as a whole is fascinating in its complexity.
Dorothy Hodgkin

Nanotechnology is the idea that we can create devices and machines all the way down to the nanometer scale, which is a billionth of a meter, about half the width of a human DNA molecule.
Paul McEuen

I will never use a substitute for butter. Margarine is one molecule away from eating plastic. If I'm going to eat that type of food, it's going to be the real deal.
Paula Deen
More "Molecule" Quotations

Molecule Translations

molecule in Dutch is molecuul
molecule in Italian is molecola
molecule in Swedish is molekyl
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