The archive contains not only primary and secondary materials but also several tertiary works that shed light on later interpretations.

The art student carefully mixed tertiary colours to achieve a subtle gradient for her painting.

Researchers compared the tertiary structures of several enzymes to understand their functional differences.

Scientists searching for habitable worlds focused their telescopes on the tertiary planet orbiting the nearby star.

Many tertiary students formed a peer tutoring group to prepare for their final exams.

Many students postpone full-time employment to pursue tertiary-level education, believing it will open more opportunities.

The refinery switched fuels to reduce emissions after discovering high levels of methyl tertiary butyl ether in the groundwater.