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cav·ern·ous 'kav-ər-nəs adj
1) having caverns or cavities
2) of tissue composed largely of vascular sinuses and capable of dilating with blood to bring about the erection of a body part
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cav·er·nous (kavґər-nəs) [L. cavernosus] 1. containing caverns or hollow spaces. 2. having a characteristic low-pitched quality due to having a cavitary resonating chamber, said of certain auscultatory sounds.Medical dictionary. 2011.