sig·nif·i·ca·tive 
(sĭg-nĭfĭ-kā′tĭv)
(sĭg-nĭfĭ-kā′tĭv)adj.
Having meaning; significant.
- spectrogram
- spectrograph
- spectrographic
- spectrographically
- spectrography
- spectroheliogram
- spectroheliograph
- spectroheliographic
- spectroheliography
- spectrohelioscope
- spectrohelioscopic
- spectrometer
- spectrometric
- spectrometry
- spectrophotometer
- spectrophotometric
- spectrophotometry
- spectroscope
- spectroscopic
- spectroscopical
- spectroscopically
- spectroscopic analysis
- spectroscopic binary
- spectroscopist
- spectroscopy