noun[ C ]medicalspecializeduk/kæv.əˈnəʊ.mə/us/ˌkæv.ɚˈnoʊ.mə/(also cavernous angioma)
海绵状(血管)瘤
a group of abnormal blood vessels in the brain or spinal cord that may cause seizures (= sudden attacks of uncontrollable movements ) or other brain problems