antibody

noun
an·​ti·​body | \ ˈan-ti-ˌbä-dē How to pronounce antibody (audio) \

Definition of antibody

: any of a large number of proteins of high molecular weight that are produced normally by specialized B cells after stimulation by an antigen and act specifically against the antigen in an immune response, that are produced abnormally by some cancer cells, and that typically consist of four subunits including two heavy chains and two light chains

called also immunoglobulin

Examples of antibody in a Sentence

Recent Examples on the Web

After the procedure was postponed for a year to bring Terrance’s antibodies to an appropriate level, Gwenn received a call to travel to Emory Transplant Center in Atlanta in mid-July. Michelle Matthews | Mmatthews@al.com, al, "The kindness of a stranger saved his life through organ donation," 20 Aug. 2019 The second, mAB114, is derived from a single antibody recovered from the blood of a person who survived Ebola in the DRC in 1995 , and was developed by the US National Institute of Allergy and Infectious Diseases (NIAID). Amy Maxmen, Scientific American, "Two Ebola Drugs Show Promise Amid Ongoing Outbreak," 13 Aug. 2019 The panel determined that the Regeneron compound clearly was working better than the rest, and the NIH antibody wasn’t far behind, Fauci explained. Washington Post, "Early study results suggest 2 Ebola treatments saving lives," 12 Aug. 2019 Mina's team also developed tests to catalog antibodies—or invader-neutralizing proteins formed by one type of memory cell—in a blood sample. National Geographic, "Measles vaccines protect against more than just measles. Here's how.," 4 Mar. 2019 The symptoms would lead the KKW Beauty founder to her doctor, where test results later revealed her antibodies were positive for lupus and rheumatoid arthritis. Dave Quinn, PEOPLE.com, "Kim Kardashian West Says She 'Couldn’t Even Pick Up the Kids' During Health Scare," 13 Sep. 2019 Once a child is immunized with the oral polio vaccine, the weakened virus lives in their intestine for several weeks, allowing the child to develop immunity by building up antibodies. Patricia L. Foster, The Conversation, "A newly designed vaccine may help stamp out remaining polio cases worldwide," 13 Sep. 2019 Healthy bodies typically produce antibodies that fight off germs and other foreign substances, but lupus occurs when this system malfunctions. Samantha Lauriello, Health.com, "Kim Kardashian Thinks She Has Lupus in New 'KUWTK' Trailer—but What Does That Mean?," 6 Sep. 2019 Its pertinent antibody was isolated from a survivor of an epidemic of Ebola in the DRC in 1995. The Economist, "Two treatments for Ebola emerge from a clinical trial in Africa," 15 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antibody.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of antibody

1894, in the meaning defined above

Keep scrolling for more

Learn More about antibody

Statistics for antibody

Last Updated

17 Oct 2019

Look-up Popularity

Time Traveler for antibody

The first known use of antibody was in 1894

See more words from the same year

Keep scrolling for more

More Definitions for antibody

antibody

noun

English Language Learners Definition of antibody

medical : a substance produced by the body to fight disease

antibody

noun
an·​ti·​body | \ ˈan-ti-ˌbä-dē How to pronounce antibody (audio) \
plural antibodies

Kids Definition of antibody

: a substance produced by special cells of the body that counteracts the effects of a disease germ or its poisons

antibody

noun
an·​ti·​body | \ ˈant-i-ˌbäd-ē How to pronounce antibody (audio) \
plural antibodies

Medical Definition of antibody

: any of a large number of proteins of high molecular weight that are produced normally by specialized B cells after stimulation by an antigen and act specifically against the antigen in an immune response, that are produced abnormally by some cancer cells, and that typically consist of four subunits including two heavy chains and two light chains

called also immunoglobulin

Keep scrolling for more

More from Merriam-Webster on antibody

Rhyming Dictionary: Words that rhyme with antibody

Spanish Central: Translation of antibody

Nglish: Translation of antibody for Spanish Speakers

Britannica.com: Encyclopedia article about antibody

Comments on antibody

What made you want to look up antibody? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to fake an opponent out of position

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!