A microparasite is a parasite that completes a full life cycle within one host and can be transmitted directly to conspecific hosts. They often reproduce within a host`s cells and are generally too small to be seen with the naked eye. Most are viruses, bacteria and fungi with a smaller number being protists. Examples include Salmonella and HIV. .....
• (n.) A parasitic microorganism.
A parasitic microorganism. ... (05 Mar 2000) ... 
Mi`cro·par'a·site noun A parasitic microörganism. -- 
Type: Term Pronunciation: mī′krō-par′ă-sīt Definitions: 1. A parasitic microorganism.
microparasite A microorganism that lives as a parasite on other organisms and which is too small to be seen with the 'naked' eye.