Biology 

(Noun. /BYE-ol-ogee/) 

by Hannah Thrash 

What does it mean? 

Biology, in simple terms, is the study of life. This includes all life, from the smallest single-celled organism to entire groups of living things that interact within an environment. While biology can, and does, refer to the study of a living thing, or groups of living things, the term can also be used to refer to the way living things work together. For example, you could say ‘I study Molecular Biology’, meaning the study of life at the molecular level, or you could say ‘The biology at the molecular level is really interesting’, referring to the mechanisms of life at the level of DNA and RNA.

How do I use it in a sentence?

“I was really excited to study the biology of the forest.”

Figure 1: Biology is a really diverse subject and includes the study of the tiniest atom, all the way to how all of life interacts on Earth to form the biosphere! (Image created by author using Biorender.)

Etymology

Biology is formed from 2 Greek words: bios, meaning life, and logia, meaning branch of study or study of.

Related terms

DNA

RNA

Cell

Organ

Organism

Plants

Animals

Species

Evolution 

Fields of study in which this word is commonly used

Microbiology

Molecular Biology 

Ecology

Botany

Virology 

Zoology 

Marine Biology

Biochemistry

Neuroscience

Genetics

Taxonomy

Edited by Katherine Degner and Yasemin Cole