Parliamentary democracy is a representative democracy where government is appointed by, or can be dismissed by, representatives as opposed to a presidential rule wherein the president is both head of state and the head of government and is elected by the voters.epresentative democracy involves the election of government officials by the people being represented. If the head of state is also democratically elected then it is called a democratic republic. The most common mechanisms involve election of the candidate with a majority or a plurality of the votes.
Freebase(0.00 / 0 votes)Rate this definition: Sestina. A sestina is a structured 39-line poetic form consisting of six stanzas of six lines each, followed by a three-line stanza, known either as an envoi, tornada, or tercet. The words that end each line of the first stanza are used as line endings in each of the following stanzas, rotated in a set pattern.
Definition of MEDIASTINUM. : the space in the chest between the pleural sacs of the lungs that contains all the tissues and organs of the chest except the lungs and pleurae; also: this space with its contents. â meÂ·diÂ·asÂ·tiÂ·nal \-ËstÄ«-nÉl\ adjective.ADVERTISEMENT.edical Definition of MEDIASTINUM. 1. : the space in the chest between the pleural sacs of the lungs that contains all the viscera of the chest except the lungs and pleurae; also: this space with its contents. 2. : mediastinum testis.