English definition of Molecule

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Definition of molecule

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Molecule (n.) 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..

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Microcrith :: Microcrith (n.) The weight of the half hydrogen molecule, or of the hydrogen atom, taken as the standard in comparing the atomic weights of the elements; thus, an atom of oxygen weighs sixteen microcriths. See Crith..

Equivalent :: Equivalent (n.) A combining unit, whether an atom, a radical, or a molecule; as, in acid salt two or more equivalents of acid unite with one or more equivalents of base..

Trisnitrate :: Trisnitrate (n.) A nitrate formed from three molecules of nitric acid; also, less properly, applied to certain basic nitrates; as, trisnitrate of bismuth..

Pentachloride :: Pentachloride (n.) A chloride having five atoms of chlorine in each molecule.

Tetrol :: Tetrol (n.) A hypothetical hydrocarbon, C4H4, analogous to benzene; -- so called from the four carbon atoms in the molecule..

Polyatomic :: Polyatomic (a.) Having more than one atom in the molecule; consisting of several atoms.

Pentabasic :: Pentabasic (a.) Capable of uniting with five molecules of a monacid base; having five acid hydrogen atoms capable of substitution by a basic radical; -- said of certain acids.

Linkage :: Linkage (n.) Manner of linking or of being linked; -- said of the union of atoms or radicals in the molecule.

Atom :: Atom (n.) The smallest particle of matter that can enter into combination; one of the elementary constituents of a molecule.

Protosulphide :: Protosulphide (n.) That one of a series of sulphides of any element which has the lowest proportion of sulphur; a sulphide with but one atom of sulphur in the molecule.

Vacuist :: Vacuist (n.) One who holds the doctrine that the space between the bodies of the universe, or the molecules and atoms of matter., is a vacuum; -- opposed to plenist..

Pentoxide :: Pentoxide (n.) An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5..

Polybromide :: Polybromide (n.) A bromide containing more than one atom of bromine in the molecule.

Dioxide :: Dioxide (n.) An oxide containing two atoms of oxygen in each molecule; binoxide.

Decrement :: Decrement (n.) A name given by Hauy to the successive diminution of the layers of molecules, applied to the faces of the primitive form, by which he supposed the secondary forms to be produced..

Atom :: Atom (n.) A constituent particle of matter, or a molecule supposed to be made up of subordinate particles..

Molecularity :: Molecularity (n.) The state of consisting of molecules; the state or quality of being molecular.

Tetryl :: Tetryl (n.) Butyl; -- so called from the four carbon atoms in the molecule.

Undecane :: Undecane (n.) A liquid hydrocarbon, C11H24, of the methane series, found in petroleum; -- so called from its containing eleven carbon atoms in the molecule..

Polysilicic :: Polysilicic (a.) Of or pertaining to compounds formed by the condensation of two or more molecules of silicic acid.