Definition from Wiktionary, the free dictionary
Audio (US) (file)
- simple past tense and past participle of scatter
- randomly distributed.
- (meteorology, of clouds) covering three eighths to four eighths of the sky.
- (meteorology, of precipitation) affecting 30 percent to 50 percent of a forecast zone.
Derived terms 
meteorology: covering three eighths to four eighths of sky