IPA: /ˌspɛk.trəˈɡræf.ɪk/
KK: /spɛktrəˈgræfɪk/
Relating to the use of spectrographs, which are instruments that analyze light and other electromagnetic radiation to produce a spectrum.
The scientist used a spectrographic analysis to study the composition of the star's light.
Spectrographic → It is formed from "spectrum" (from Latin *spectrum*, meaning appearance or image) and "-graphic" (from Greek *graphia*, meaning writing or representation). The word "spectrographic" refers to the representation or writing of a spectrum, typically in the context of analyzing light or sound waves.
Think of 'spectrum' as an 'appearance' or 'image' and '-graphic' as 'writing' or 'representation'. This helps you remember that 'spectrographic' relates to the representation of a spectrum.