1. A localized area of diminished vision edged by shimmering coloured lights; in many people it indicates the onset of migraine
   - scintillating scotoma

Type of: scotoma

• Marco Polo sheep
• Marco Polo's sheep
• Marconi
• Marconi rig
• Marcus Annius Verus
• Marcus Antonius
• Marcus Aurelius
• Marcus Aurelius Antoninus
• Marcus Aurelius Valerius Maximianus
• Marcus Cocceius Nerva
• Marcus Junius Brutus
• Marcus Terentius Varro
• Marcus Tullius Cicero
• Marcus Ulpius Traianus
• Marcus Vipsanius Agrippa
• Marcus Whitman
• Marcuse
• Mardi Gras
• Marduk
• mare
• mare clausum
• mare liberum
• mare nostrum
• mare's nest
• mare's tail