anaphylaxis

/ˌænəfɪˈlæksɪs/

anaphylaxis means extreme sensitivity to a substance such as a foreign protein or drug.

anaphylaxis is pronounced /ˌænəfɪˈlæksɪs/.

Etymology

Borrowed 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”).

noun

Extreme sensitivity to a substance such as a foreign protein or drug.
A severe and rapid systemic allergic reaction to an allergen, causing a constriction of the trachea, preventing breathing; anaphylactic shock.

Definitions & examples from Wiktionary (CC BY-SA 3.0).

Words closest in meaning

By meaning, not spelling — each word's AI semantic fingerprint, nearest first.

anaphylactic 68% match — Pertaining to anaphylaxis. vs anaphylaxis →
anaphylactogen 67% match — A substance likely to or capable of producing an adverse reaction (anaphylaxis) in a person. vs anaphylaxis →
anaphylaxic 66% match — Of or pertaining to anaphylaxis; anaphylactic. vs anaphylaxis →
anaphylactoid 62% match — Of, pertaining to, or resembling anaphylaxis vs anaphylaxis →
pseudoanaphylactic 61% match — Relating to pseudoanaphylaxis. vs anaphylaxis →
anaphylactogenic 61% match — That tends to cause anaphylaxis. vs anaphylaxis →
allergen 60% match — A substance which causes an allergic reaction. vs anaphylaxis →
anaphylotoxic 60% match — Relating to, or caused by anaphylotoxins vs anaphylaxis →