Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “biological”

See all translations

biological

adjective uk   /ˌbaɪ.əˈlɒdʒ.ɪ.kəl/ us    /-ˈlɑː.dʒɪ-/
B2 connected with the natural processes of living things: the biological sciences Eating is a biological necessity! [before noun] related by birth: She decided to search for her biological mother after her adoptive parents died. UK used to describe a substance used for cleaning that uses enzymes to remove dirt: biological washing powder
Compare
using living matter, such as bacteria, to seriously harm and kill people and animals, and to damage crops: biological weapons/warfare
More examples
biologically
adverb uk   /-i/ us  
biologically active/stable chemicals
(Definition of biological from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of biological?
Add Cambridge dictionaries to your browser to your website

Definitions of “biological” in other dictionaries

Word of the Day

luck

the force that causes things, especially good things, to happen to you by chance and not as a result of your own efforts or abilities

Word of the Day

A certain je ne sais quoi: French words and phrases used in English

by Liz Walter,
January 21, 2015
It is an odd irony that the more sophisticated your use of English is, the more likely you are to use French words and phrases. Or, to be more accurate, ones you know to be French – words such as ballet, au pair, abattoir, fiancé, café, and restaurant are so entrenched in

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More