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| aldehyde |
in chemistry, any of a group of organic compounds, such as formaldehyde, the molecule of which contains a terminal carbon atom bound separately to a hydrogen and an oxygen atom. |
| amyl |
the small organic molecule derived from pentane; pentyl. [2 definitions] |
| atomicity |
the number of atoms in a molecule. [1/2 definitions] |
| benzene ring |
the graphic representation of the benzene molecule or its derivatives as a hexagon with a carbon atom at each of its six points, and with attached atoms of hydrogen or other elements. |
| beta-carotene |
a molecule of the carotene family that has a red-orange color and is abundant in plants. |
| configuration |
in chemistry, the relative position or arrangement of atoms within a molecule. [1/6 definitions] |
| dehydrogenase |
an enzyme that catalyzes the removal of hydrogen atoms from a molecule. |
| diatomic |
of a molecule, composed of two atoms. [1/2 definitions] |
| dichromate |
a chemical compound that contains two chromium atoms per molecule, characterized by an orange-red color; bichromate. |
| dichromic2 |
containing two chromium atoms per molecule. |
| dipole |
a polar molecule in which the centers of the positive charges are different from the centers of the negative charges. [1/3 definitions] |
| disulfate |
a salt of pyrosulfuric acid, containing two sulfate groups in each molecule; pyrosulfate. |
| excite |
in physics, to raise (an atom, particle, or molecule) to a state of higher energy. [1/5 definitions] |
| free radical |
an atom or molecule with one or more unpaired electrons. |
| ion |
an atom, group of atoms, or molecule that bears a positive electric charge as a result of electron loss or a negative charge as a result of electron gain. [1/2 definitions] |
| ligand |
in biochemistry, a molecule that binds to a target biomolecule, usually a protein. [2 definitions] |
| macromolecule |
a very large molecule, such as a polymer or protein molecule, composed of hundreds or thousands of atoms. |
| messenger RNA |
a single-stranded molecule of ribonucleic acid that carries a code from the DNA, where it is synthesized, to the cytoplasm, where it specifies the sequence of amino acids required for protein synthesis. |
| methyl alcohol |
a colorless, volatile, poisonous liquid, consisting of one carbon atom per molecule with hydrogen and oxygen, that is used as a fuel, solvent, and antifreeze; methanol. |
| molecular weight |
the sum of all the atomic weights of the atoms in a molecule. |
| monatomic |
containing one atom in the molecule. [1/3 definitions] |
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