Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “antibody”

antibody

noun [C]     /ˈæn.tiˌbɒd.i/ US  /-t̬iˌbɑː.di/
a protein produced in the blood that fights diseases by attacking and killing harmful bacteria: Antibodies found in breast milk protect newborn babies against infection.Immunology and vaccinationThe circulatory system and blood
(Definition of antibody noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of antibody

Definitions of “antibody” in other dictionaries

Word of the Day

neighbourly

friendly or helpful

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