nim·bo·strat·us 
(nĭm′bō-strătəs, -strātəs)
(nĭm′bō-strătəs, -strātəs)n.
A low, gray, often dark cloud that precipitates rain, snow, or sleet.
[NIMB(US) + STRATUS.]
nimbostratus- Schwarzkopf
- Schwarzschild radius
- Schweitzer
- Schwerin
- Schwitters
- sciaenid
- sciatic
- sciatica
- sciatic nerve
- SCID
- science
- science fiction
- science-fiction
- scienter
- sciential
- scientific
- scientifically
- scientific creationism
- scientific method
- scientific name
- scientific notation
- scientism
- scientist
- scientistic
- Scientology