1. Atmospheric electricity (lasting 10 msec) appearing as globular flashes of red (pink to blood-red) light rising to heights of 60 miles (sometimes seen together with elves)
   - sprites

Type of: atmospheric electricity

• Free World
• free zone
• free-and-easy
• free-associate
• free-base
• free-enterprise
• free-floating
• free-flying
• free-for-all
• free-liver
• free-living
• free-range
• free-reed
• free-reed instrument
• free-soil
• free-spoken
• free-swimming
• free-to-air
• freebee
• freebie
• freeboard
• freeboard deck
• freebooter
• freeborn
• freedman