IgA

noun
\ ˌī-(ˌ)jē-ˈā How to pronounce IgA (audio) \

Definition of IgA

1 : a class of immunoglobulins including antibodies found in external bodily secretions (such as saliva, tears, and sweat)
2 : an antibody of the class IgA

First Known Use of IgA

1969, in the meaning defined at sense 1

History and Etymology for IgA

immunoglobulin

Keep scrolling for more

Learn More about IgA

Statistics for IgA

Cite this Entry

“IgA.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/IgA. Accessed 12 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for IgA

IgA

noun
\ ˌī-ˌjē-ˈā How to pronounce IgA (audio) \

Medical Definition of IgA

1 : a class of immunoglobulins that include antibodies found in external bodily secretions (as saliva, tears, and sweat)
2 : an immunoglobulin of the class IgA

Comments on IgA

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

WORD OF THE DAY

Test Your Vocabulary

Star Wars Words Quiz

  • cu jedi training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

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!