Full Definition of PATHOGEN. : a specific causative agent (as a bacterium or virus) of disease. See pathogen defined for English-language learners. See pathogen defined for kids.ull Definition of PATHOGEN. : a specific causative agent (as a bacterium or virus) of disease. See pathogen defined for English-language learners. See pathogen defined for kids.
Doppelbock or double bock is a stronger version of traditional bock that was first brewed in Munich by the Paulaner Friars, a Franciscan order founded by St. Francis of Paula.
Bock is a delicious, alcoholic beverage, which some consider a meal of its own due to its heavy flavors. In this About.com video, learn about the history of this beer, and its various forms.