biology

noun bi·ol·o·gy \ bī-ˈä-lə-jē \
Updated on: 12 Nov 2017

Definition of biology

1 : a branch of knowledge that deals with living organisms and vital processes
  • advances in the field of biology
  • a biology textbook
2 a : the plant and animal life of a region or environment
  • the biology of the rain forest
b : the life processes especially of an organism or group
  • the biology of cancer cells
; broadly : ecology

biologist

play \-jist\ noun

Examples of biology in a Sentence

  1. advances in the field of biology

  2. the biology of the rain forest

  3. the biology of tumor cells

Recent Examples of biology from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biology.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of biology

German Biologie, from bi- + -logie -logy



BIOLOGY Defined for English Language Learners

biology

noun

Definition of biology for English Language Learners

  • : a science that deals with things that are alive (such as plants and animals)

  • : the plant and animal life of a particular place

  • : the processes that occur in a living thing


BIOLOGY Defined for Kids

biology

noun bi·ol·o·gy \ bī-ˈä-lə-jē \

Definition of biology for Students

: a science that deals with living things and their relationships, distribution, and behavior

Medical Dictionary

biology

noun bi·ol·o·gy \ -jē \

medical Definition of biology

plural biologies
1 : a branch of science that deals with living organisms and vital processes
2 a : the plant and animal life of a region or environment
b : the laws and phenomena relating to an organism or group
3 : a treatise on biology


Seen and Heard

What made you want to look up biology? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to remove or wipe out

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!