M

Meteorology is the study of the atmosphere, is a related field of geology used by forensic investigators, lawyers, and prosecutors to look for specific information to be used in court when climate conditions are of relevance in explaining an event. The term meteorology originates from the Greek, meteoros, for airborne, and logos, for discourse or study.
Microbiology is the study of microorganisms, which are unicellular or cell-cluster microscopic organisms. Microbiology is a broad term which includes many branches like virology, mycology, parasitology and others.
Microbiologist is a person who specializes in the area of microbiology.
Micro is an English prefix of Greek origin that refers to an object as being smaller than an object or scale of focus, in contrast with macro.
Microscope (Greek: micron = small + skopein = to look at) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. Microscopy is the science of investigating small objects using such an instrument. The term microscopic means minute or very small, not visible with the eye unless aided by a microscope.