phosphene /fosˈfēn/

1. Light seen when the eyeball is pressed
2. A luminous pattern seen when the brain is stimulated electrically

• self-studies
• self-study
• self-styled
• self-subdued
• self-substantial
• Sinic
• sinical
• sinicise
• sinicised
• sinicises
• sinicising
• Sinicism
• sinicize
• sinicized
• sinicizes
• sinicizing
• sining
• sinister
• sinisterities
• sinisterity
• sinisterly
• sinisterness
• sinisterwise
• sinistral
• sinistralities