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n. pl. dis·cus·es 1. Sports a. A disk, typically wooden, plastic, or rubber with a metal rim, that is thrown for distance in athletic competitions. b. A track-and-field event in which a discus is thrown. 2. pl. discus Any of several small colorful South American freshwater fish of the genus Symphysodon that have a disk-shaped body and are popular in home aquariums. 3. Something resembling a flat circular plate; a disk. [Latin; see DISK.]  (click for a larger image) discusRobert Harting of Germany at the 2009 DKB-ISTAF Golden League meet Berlin, Germany |
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