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.
Agricultural Tractor. A wheel type vehicle, or track vehicle, of more than 20 engine horsepower, designed to furnish the power to pull, carry, propel, or drive implements that are designed for agriculture. All self-propelled implements are excluded. Approved Truck or Industrial Truck.