al·​ler·​goid ˈa-lər-ˌgȯid How to pronounce allergoid (audio)
: an allergen (such as pollen) that has been chemically modified and is used especially in immunotherapy to treat allergic conditions by lessening the immune response
An allergoid made from ragweed allergen and injected into someone with hay fever could teach ragweed-specific [T helper] cells not to give the "go ahead" signal for a reaction to real ragweed pollen. Johnathan Brostoff and Linda Gamlin, Hay Fever: The Complete Guide …

Note: Allergoids are less likely to bind to the immunoglobulin IgE and cause serious side effects during treatment.

Dictionary Entries Near allergoid

Cite this Entry

“Allergoid.” Medical Dictionary, Merriam-Webster, Accessed 29 Nov. 2022.

Love words? Need even more definitions?

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

Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
Name That Thing

You know what it looks like… but what is it called?

Universal Daily Crossword

A daily challenge for crossword fanatics.