Wiktionary (0.00 / 0 votes) Rate this definition: device (Noun). Any piece of equipment made for a particular purpose, especially a mechanical or electrical one. There are a number of household devices in a kitchen such as a dishwasher, a garbage disposal, or an electric can opener.
1. heptane-a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings. alkane, alkane series, methane series, paraffin series, paraffin-a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2). 1  Facebook.
In geometry, a heptagon is a polygon with seven sides and seven angles. In a regular heptagon... In geometry, a heptagon is a polygon with seven sides and seven angles. In a regular heptagon, in which all sides and all angles are equal, the sides meet at an angle of radians, 128.5714286 degrees. Its SchlÃ¤fli symbol is {7}. The area of a regular heptagon of side length is given by.