1. the technique of photographing or recording spectra for analysis
Usage: scientific; technical

Examples

• The laboratory uses spectrography to identify unknown chemical compounds.
• Astronomers rely on spectrography to determine the composition of distant stars.
• Modern spectrography equipment can detect trace elements in samples.
• The scientist’s research in spectrography led to important discoveries about molecular structure.
• Medical spectrography helps analyze blood and tissue samples.
• Industrial quality control often employs spectrography for material testing.