microbiology

/ˌmaɪkroʊbaɪˈɑlədʒi/
noun
  1. The branch of science that deals with microorganisms, including bacteria, viruses, fungi, and protozoa.
    • Advances in microbiology have led to better vaccines and antibiotics.
    • She decided to study microbiology because she was fascinated by tiny life forms.
    • The university offers a degree program in microbiology and immunology.