Noun
A prodrome.
A preliminary course or publication; -- used esp. in the titles of elementary works.
Source: Webster's dictionaryNicolaus Steno (Latinized name of Niels Steensen) with John Garrett Winter, trans., The Prodromus of Nicolaus Steno's Dissertation Concerning a Solid Body Enclosed by Process of Nature Within a Solid (New York, New York: Macmillan Co., 1916). Source: Internet
In nineteenth-century works such as the Prodromus main of Augustin Pyramus de Candolle and the Genera Plantarum main of George Bentham and Joseph Dalton Hooker this word ordo main was used for what now is given the rank of family. Source: Internet
Theologian From his Transylvanian period dates Alsted's Prodromus (printed 1641, but dated 1635). Source: Internet