Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “pathogen”

See all translations


noun [C] uk   /ˈpæθ.ə.dʒən/ us  
any small organism, such as a virus or a bacterium that can cause disease: a dangerous pathogen
adjective uk   /ˌpæθ.əˈdʒen.ɪk/ us  
Translations of “pathogen”
in Chinese (Traditional) 病原體…
in Chinese (Simplified) 病原体…
(Definition of pathogen from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of pathogen?
Add Cambridge dictionaries to your browser to your website

Definitions of “pathogen” in other dictionaries

Word of the Day


a liquid used for washing hair, or for washing particular objects or materials

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More