From the Greek for "small" & "life" comes this 7-letter word for a germ or a disease-causing bacterium
[DOC] [TLE] Microbe | Define Microbe at Dictionary.com [PAR] popular name for a bacterium, 1878, from French microbe, "badly coined ... by 
Sdillot" [Weekley] in 1878 from Greek mikros "small" (see mica) + bios "life" (see
... [DOC] [TLE] Germ - definition of germ by The Free Dictionary [PAR] Similarly, the term microbe, which comes from the Greek prefix mikro-, "small," ... 
germ - a minute life form (especially a disease-causing bacterium); the term is... [DOC] [TLE] Germ theory of disease - Wikipedia [PAR] This is the bacterium that causes cholera.