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A magister degree (also magistar, female form: magistra; from Latin: magister, "teacher") is an academic degree used in various systems of higher education.

The magister degree arose in mediaeval universities in Europe and was originally equal to the doctorate; while the doctorate was originally conferred in theology, law and medicine, the magister degree was usually conferred in the arts. In some countries, the title has retained this original meaning until the modern age, while in other countries, magister has become the title of a lower degree, in some cases parallel with a master's degree (whose name is cognate).

In Argentina, the Master of Science or Magister (Mg, Ma, Mag, MSc) is a postgraduate degree of two to four years of duration by depending on each university's statutes. The admission to a Master program (Spanish: Maestría) in an Argentine University requires the full completion of an undergraduate degree, as well Licentiate's degree as Professorate degree of four to five years long from any recognized university. Under the accomplishment of the Magister Scietiæ thesis dissertation, that in years of formal education, is generally equivalent to a Ph.D. or Doctorate in universities of North America or Europe given the Bologna comparison system among academic programs.

In Egypt, Magister degree is a postgraduate degree which is awarded after three to 6 years duration. It is equivalent to MSc degree. It is a prerequisite to have an MSc before applying to a Ph.D. or Doctorate degrees.

In Austria, Bulgaria, Poland, the Czech Republic, Germany, Ukraine, Latvia, Lithuania and Slovakia, obtaining the Magister requires at least five years of study including coursework and a final thesis, similar to a Diplom degree. Magisters tend to be awarded in the humanities and the social sciences, while Diplomas dominate in the natural sciences and in engineering.

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