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!Animal and plant biology - general words [before noun] related by birth: She decided to search for her biological mother after her adoptive parents died.Family relations in general UK describes a substance used for cleaning that uses enzymes to remove dirt: biological washing powder
Compare
Cleaning agents
using living matter, such as bacteria, to seriously harm and kill people and animals, and to damage crops: biological weapons/warfareArms and munitions in general
biologically
adverb uk   /-i/ us  
biologically active/stable chemicalsAnimal and plant biology - general words
(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

innovate

to introduce changes and new ideas

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More