Aeroallergens

Part of speech: noun

Definitions

1. Particles found in the atmosphere that can induce allergic reactions in those sensitive to them, typically originating from flora, fauna, or fungi
2. Airborne agents that elicit allergic responses in susceptible individuals, frequently derived from organic matter like plants and animals
3. Substances carried by the air that trigger allergic reactions in sensitive people

Etymology: The word is a compound built in English from two Greek-derived elements. "Aero-" comes from Ancient Greek "aēr" (genitive "aéros"), meaning air, which in classical Greek also referred to the lower atmosphere and mist. "Allergen" is itself a modern formation: "allergy" was coined in German as "Allergie" and brought into English, and "-gen" is a suffix from Greek "-genēs" meaning "producing" or "born of," so an allergen is literally something that produces an allergic reaction. Putting the two together gives "aero-" plus "allergen," describing an allergen carried through the air. The meaning is narrow and technical: pollen, mould spores, fungal spores, animal dander, and similar particles that drift on air currents and trigger reactions in sensitive people. The plural "aeroallergens" is simply the form used when more than one such particle is meant.

Synonyms: airborne allergens, pollens, dusts, spores