biology

noun4

1. •
   The study of all life or living matter.

   • As in much of biology, the most satisfying truths in ecology derive from manipulative experimentation. Tinker with nature and quantify how it responds. — 2012
2. •
   The structure, function, and behavior of an organism or type of organism.
3. •
   The living organisms of a particular region.
4. •
   (no longer used) A biographical history.