Noun. 1. pathogen-any disease-producing agent (especially a virus or bacterium or other microorganism). microorganism, micro-organism-any organism of microscopic size. infectious agent, infective agent-an agent capable of producing infection.Translations.. pathogen-any disease-producing agent (especially a virus or bacterium or other microorganism). microorganism, micro-organism-any organism of microscopic size.
Timber porch detail. A covered porch. A porch (from Old French porche, from Latin porticus colonnade, from porta passage) is a construction usually external to the walls of the main building proper, but may be enclosed by latticework, broad windows, screen, or other light frame walls extending from the main structure.
Hyponyms (each of the following is a kind of porch): back porch (a porch for the back door) deck (a porch that resembles the deck on a ship) front porch (a porch for the front door) portico (a porch or entrance to a building consisting of a covered and often columned area) stoep; stoop (small porch or set of steps at the front entrance of a house) gallery; veranda; verandah (a porch along the outside of a building (sometimes partly enclosed))