| a chattering or flighty, light-headed person. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
molecule mol·e·cule (mŏl'ĭ-ky&oomacr;l')
n.
The smallest particle into which an element or a compound can be divided without changing its chemical and physical properties; a group of atoms that is held together chemically.
molecule (mŏl'ĭ-ky l') Pronunciation Key
A group of two or more atoms linked together by sharing electrons in a chemical bond. Molecules are the fundamental components of chemical compounds and are the smallest part of a compound that can participate in a chemical reaction. |
A combination of two or more atoms held together by a force between them. (See covalent bond and ionic bond.)