| nominal aphasia | An aphasia in which the principal deficit is difficulty in naming persons and objects seen, heard, or felt; due to lesions in various portions of the language area. Synonym: amnestic aphasia, amnesic aphasia, anomia, anomic aphasia. (05 Mar 2000) |
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| nominal taxon | <zoology> A named taxon, objectively defined by its type taxon Thus the nominal family muscidae is always the one to which its nominal type genus, Musca, belongs. (09 Jan 1998) |