Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “biological”

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 describes 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
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

fairy

an imaginary creature with magic powers, usually represented as a very small person with wings

Word of the Day

What’s that lovely smell?

by Kate Woodford​,
October 29, 2014
As adult humans, we can distinguish about 10,000 different smells. It’s no wonder, then, that we have so many words and expressions to describe them. This week we’re taking a look at those smell words – words that describe good smells and words that describe bad smells. Most smell words are either

Read More 

high-frequency trading noun

October 27, 2014
a type of stock market trading that uses very complex technology to trade extremely quickly, often making tiny profits which nevertheless add up to substantial sums Lewis’s book, Flash Boys, is driving a huge amount of attention toward the topic of high frequency trading, and it has rekindled some of

Read More