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The character "砗" derives from the traditional form "磲", created specifically for the transliterated term "砗磲" which entered Chinese from Sanskrit to name the giant clam. In its traditional composition, "磲" combines the radical "石" for stone, indicating the material quality of the shell, with "渠" providing approximate pronunciation. The simplified form "砗" substitutes the phonetic component with "车", reducing stroke count while maintaining a phonetic link. Throughout its use, the character's meaning has remained exclusively associated with this marine organism.