11 letters · 26 points in Scrabble
noun hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance
originBorrowed from French anaphylaxie, coined by French physiologist and parapsychologist Charles Richet and French zoologist Paul Portier from the Ancient Greek ᾰ̓νᾰ- (ănă-, “(intensifier) thoroughly”) from ᾰ̓νᾰ́ (ănắ, “to, again, upon”) and φύλαξις (phúlaxis, “protection, watching, guarding”).
Etymology from Wiktionary, CC BY-SA 3.0