easily spread; "fear is exceedingly infectious; children catch it from their elders"- Bertrand Russell
caused by infection or capable of causing infection; "viruses and other infective agents"; "a carrier remains infective without himself showing signs of the disease"
of or relating to infection; "infectious hospital"; "infectious disease"
diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal