Molecule

n.	1.	One of the very small invisible particles of which all ordinary matter is supposed to consist.
	2.	(Physics) 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.	(Chem.) 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.

Noun	1.	molecule - (physics and chemistry) the simplest structural unit of an element or compound
	2.	molecule - (nontechnical usage) a tiny piece of anything Synonyms: corpuscle, mote, particle, speck, atom

Kekule formula, ace, acid, acidity, agent, air, alkali, alkalinity, alloisomer, anion, antacid, atom, atomic cluster, atomic particles, base, benzene ring, biochemical, bit, branched chain, brute matter, building block, cation, chain, chemical, chemical element, chromoisomer, closed chain, component, compound, compound radical, constituent, copolymer, cycle, dab, dimer, dole, dot, dram, dribble, driblet, dwarf, earth, electron, element, elementary particle, elementary unit, farthing, fire, fleck, flyspeck, fragment, fundamental particle, gobbet, grain, granule, groat, hair, handful, heavy chemicals, heterocycle, high polymer, homocycle, homopolymer, hydracid, hyle, hypostasis, inorganic chemical, ion, iota, isomer, jot, lattice, little, little bit, lota, macromolecule, material, material world, materiality, matter, meson, metamer, minim, minimum, minutiae, mite, modicum, monad, monomer, mote, natural world, nature, neutralizer, nonacid, nuclear particle, nutshell, organic chemical, ounce, oxyacid, particle, pebble, physical world, pinch, pittance, plenum, point, polymer, proton, pseudoisomer, quark, radical, ray, reagent, ring, scruple, side chain, simple radical, smidgen, smitch, space-lattice, speck, spoonful, spot, straight chain, stuff, substance, substratum, sulfacid, the four elements, thimbleful, tiny bit, tittle, trifling amount, trimer, trivia, unit of being, water, whit

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