biological

adjective
bi·​o·​log·​i·​cal | \ˌbī-ə-ˈlä-ji-kəl \
variants: or less commonly biologic \ ˌbī-​ə-​ˈlä-​jik \

Definition of biological 

1 : of or relating to biology or to life and living processes

2 : used in or produced by applied biology

3 : connected by direct genetic relationship rather than by adoption or marriage her biological father

Keep scrolling for more

Other Words from biological

biologically \ ˌbī-​ə-​ˈlä-​ji-​k(ə-​)lē \ adverb

Synonyms & Antonyms for biological

Synonyms

birth, consanguineous, natural

Antonyms

adopted, adoptive, nonbiological

Visit the Thesaurus for More 

Examples of biological in a Sentence

the rights of the biological father in this case

Recent Examples on the Web

Practitioners measure things like telomeres—the protective caps on chromosomes that supposedly reveal one’s biological age—to locate the source of an ailment or those last stubborn pounds. Jancee Dunn, Vogue, "The Future of Dieting Is Here—And it Has Nothing to do With Calorie Counting," 29 Oct. 2018 The play/movie, built around the songs of ABBA, centers on a young woman who invites three men, all of whom might be her biological father, to her wedding after finding her mother's racy diary from the summer before she was born. Kayleigh Roberts, Marie Claire, "Lily James Talks About the Pressure of Playing a Young Meryl Streep," 13 Oct. 2018 The news magazine draws on the help of DNA detective CeCe Moore to help two people, who were abandoned at birth, find their biological families. Hal Boedeker, OrlandoSentinel.com, "'Jonestown: An American Tragedy,' Sacha Baron Cohen: This weekend," 13 July 2018 On Thursday, MyHeritage offered 5,000 testing kits as an extension of their pro bono initiative to reunite adoptees with their biological families. John Moore, National Geographic, "Could DNA Testing Reunite Immigrant Families? Get the Facts.," 25 June 2018 Even though dinosaurs are ancestors to birds, this biological difference shows how evolution has played a role in animals that populate the world today. David Grossman, Popular Mechanics, "Dinosaurs Could Barely Use Their Tongues," 20 June 2018 Damore’s memo argued that biological differences accounted for the dearth of female engineers. Nitasha Tiku, WIRED, "Google’s Employee Diversity Numbers Haven’t Really Improved," 14 June 2018 Tinggal immediately began searching for her biological family. Allyson Chiu, BostonGlobe.com, "Irish government apologizes to 126 people illegally adopted. There may be thousands like them, activists say.," 31 May 2018 Tami and Shelly make a point of staying in touch with as many members of the kids' biological families as possible. Melody Warnick, Woman's Day, "Work Inspired These Nurses to Adopt Kids Whose Families Were Affected By Drugs," 30 May 2018

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

See More

First Known Use of biological

1818, in the meaning defined at sense 1

Keep scrolling for more

Learn More about biological

Share biological

Statistics for biological

Last Updated

15 Nov 2018

Look-up Popularity

Time Traveler for biological

The first known use of biological was in 1818

See more words from the same year

Keep scrolling for more

More Definitions for biological

biological

adjective

English Language Learners Definition of biological

: of or relating to biology or to life and living things

: related through birth

biological

adjective
bi·​o·​log·​i·​cal | \ˌbī-ə-ˈlä-ji-kəl\

Kids Definition of biological

1 : of or relating to biology or to life and living things biological activity

2 : related by birth

biological

adjective
variants: also biologic

Medical Definition of biological 

1 : of or relating to biology or to life and living processes

2 : used in or produced by applied biology

3 : related by direct genetic relationship rather than by adoption or marriage an adoptee who searched for years for her biological parents

Other Words from biological

biologically \ -​i-​k(ə-​)lē \ adverb

Keep scrolling for more

Comments on biological

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

WORD OF THE DAY

noxious or harmful

Get Word of the Day daily email!

Test Your Vocabulary

A Thanksgiving Word Quiz

  • a-traditional-thanksgiving-dinner
  • November comes from a word for which of the following numbers?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Dictionary Devil

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!