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nodule - (mineralogy) a small rounded lump of mineral substance (usually harder than the surrounding rock or sediment) mineralogy - the branch of geology that studies minerals: their structure and properties and the ways of distinguishing them.
Vocal nodules are thick calluses that form on the vocal folds. Nodules develop at the point of maximal contact of the vocal folds. They form to protect underlying delicate vocal tissue from repeated trauma. Vocal nodules are also known as karaoke nodules, nodes, singerâs nodes, and screamerâs nodes.