so·lar·im·e·ter 
(sō′lə-rĭmĭ-tər)
(sō′lə-rĭmĭ-tər)n.
An instrument used to measure the flux of solar radiation through a surface.
- stance
- stanch
- stanch
- stanch
- stancher
- stanchion
- stand
- stand a chance
- standalone
- standard
- standard-bearer
- standardbred
- standard candle
- standard deviation
- Standard English
- standard error
- standard gauge
- standardization
- standardize
- standardly
- standard model
- standard of living
- standard operating procedure
- standard pressure
- standard schnauzer