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| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a gadget; dingus; thingumbob. |
hemagglutinin he·mag·glu·ti·nin (hē'mə-gl&oomacr;t'n-ĭn)
n.
A substance that causes agglutination of red blood cells.