Bourgeoisie is a classification used in analyzing human societies to describe a social class of people who are in the upper or merchant class, whose status or power comes from employment, education, and wealth as opposed to aristocratic origin. Petite bourgeoisie (also Petty Bourgeoisie) is used to describe the class below the bourgeoisie but above the Proletariat.
The term is widely used in many non-English speaking countries as an approximate equivalent of middle class (found in the Communist Manifesto by Karl Marx and Friedrich Engels).
In common usage the term has pejorative connotations suggesting either undeserved wealth, or lifestyles, tastes, and opinions that lack the sophistication of the rich or the authenticity of the intellectual or the poor. It is rare for people in the English speaking world to identify themselves as members of the bourgeoisie, although many self-identify as middle class. On the other hand some would self-identify as proletarians. In reality many members of this class are transitory like Marx had originally argued. In the United States, where social class affiliation lacks some of the structure and rules of many other nations, "bourgeoisie" is sometimes used to refer to those seen as being either upper class or upper middle class.
Bourgeoisie is a French word that was borrowed directly into English in the specific sense described above. In the French feudal order pre-revolution, "bourgeois" was a class of citizens who were wealthier members of the Third Estate, but were overtaxed and had none of the privileges which the aristocracy held (however many bourgeois bought their way into nobility; see Venal Office).
Bourgeoisie were defined by conditions such as length of residence and source of income. The word evolved to mean merchants and traders, and until the 19th century was mostly synonymous with the middle class (persons in the broad socioeconomic spectrum between nobility and serfs or proletarians). Then, as the power and wealth of the nobility faded in the second half of the 19th century, the bourgeoisie emerged as the new ruling class.
The French word bourgeois evolved from the Old French word burgeis, meaning "an inhabitant of a town" (cf. Middle English burgeis, Middle Dutch burgher and German Bürger). The Old French word burgeis is derived from bourg, meaning a market town or medieval village, itself derived from Late Latin burgus, meaning "fortress"