| Noun | 1. | angioma - a tumor consisting of a mass of blood or lymphatic vessels angiopathy - any disease of the blood vessels or lymph ducts haemangioma, hemangioma - benign angioma consisting of a mass of blood vessels; some appear as birthmarks lymphangioma - benign angioma consisting of a mass of lymphatic vessels spider angioma, spider nevus, vascular spider - a dilation of superficial capillaries with a central red dot from which blood vessels radiate |