soft - spit
- spectrogram
- spectrograph
- spectrographic
- spectrographically
- spectrography
- spectroheliogram
- spectroheliograph
- spectroheliography
- spectrohelioscope
- spectrometer
- spectrometric
- spectrometry
- spectrophotometer
- spectrophotometric
- spectrophotometrical
- spectrophotometrically
- spectrophotometry
- spectroscope
- spectroscopic
- spectroscopically