microbiologist

noun

1. the branch of biology dealing with the structure, function, uses, and modes of existence of microscopic organisms.

noun

1. the branch of biology involving the study of microorganisms

n.1882, from microbiology + -ist. n.1880, coined in English from micro- + biology. Related: Microbiological. n.

1. The branch of biology that deals with microorganisms and their effects on other living organisms.

1. The scientific study of microorganisms.