any member of an extinct order, Anaspida, of small, freshwater jawless fishes of the Silurian and Devonian periods, characterized by a single nostril, narrow rows of scales, and, usually, an armor-plated head.
anaphylatoxin anaphylatoxin an·a·phyl·a·tox·in or an·a·phyl·o·tox·in (ān’ə-fĭl’ə-tŏk’sĭn) n. A substance that may cause the release of histamine and other compounds that cause hypersensitivity, thus triggering some or all of the symptoms of anaphylaxis.
- Anaphylactoid shock
anaphylactoid shock anaphylactoid shock n. A reaction similar to anaphylactic shock but not requiring the incubation period characteristic of induced sensitivity and unrelated to antibody-antigen reactions.
- Anaphylactoid purpura
anaphylactoid purpura anaphylactoid purpura n. See allergic purpura. See Henoch-Schönlein purpura.
a representation, in Byzantine art, of Christ harrowing hell. Historical Examples We find423 connected the terms “nous” and “phronsis,” also “anastasis.” Plotinos: Complete Works, v. 4 Plotinos (Plotinus)