a type of macular degeneration that is one of the leading causes of blindness in the elderly and in which tiny blood vessels grow into the macula of the retina, obscuring vision.
adjective 1. of or relating to a semivowel
[sem-ee-vi-tree-uh s, sem-ahy-] /ˌsɛm iˈvɪ tri əs, ˌsɛm aɪ-/ adjective, (of ceramics) 1. partially vitreous. semivitreous /ˌsɛmɪˈvɪtrɪəs/ adjective 1. partially vitreous 2. (ceramics) not wholly impervious to liquid
- Senile plaque
senile plaque n. A spherical mass of amyloid fibrils surrounded by distorted interwoven neuronal processes, found in the cerebral cortex in Alzheimer’s disease. Also called neuritic plaque.
- Senile pruritus
senile pruritus n. Itching associated with degenerative changes that occur in aging skin.