alerdyi

Etymology
From, from. Coined by Austrian pediatrician Clemens von Pirquet in 1906 from +, on the model of.

Noun

 * 1)  a disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma
 * 2)  any condition of hypersensitivity to a substance
 * 3) altered susceptibility to a first treatment as exhibited in reaction to a subsequent one
 * 4) an antipathy, as toward a person or activity