Molecule

n. smallest unit in a substance or compound (usually composed of one or more atoms); tiny particle

In chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two atoms in a definite arrangement held together by strong chemical bonds. In organic chemistry and biochemistry, the term molecule is used less strictly and also is applied to charged organic molecules and biomolecules. Molecules are distinguished from polyatomic ions in the strict sense.
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Noun
1. (physics and chemistry) the simplest structural unit of an element or compound
(hypernym) unit, building block
(hyponym) dipole molecule
(part-meronym) chain, chemical chain
(classification) physics, physical science, natural philosophy
2. (nontechnical usage) a tiny piece of anything
(synonym) atom, particle, corpuscle, mote, speck
(hypernym) material, stuff
(hyponym) grain

n. molecule, smallest unit in a substance or compound (usually composed of one or more atoms); tiny particle

n. molecule