When writing the literature review, the professor warned us to rely on a tertiary source only to identify key works, and not as a substitute for examining primary or secondary materials.

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

After multiple referrals, she was finally admitted to tertiary healthcare for the advanced neurosurgical procedure.

During the photolysis experiment, the tertiary amyl radical was detected by electron spin resonance.

When mixing paint, I used a tertiary color to soften the contrast between the two primary hues.

Many students consider tertiary education essential for advancing their careers.

When writing a literature review, graduate students should rely on primary and secondary sources rather than tertiary sources.

Tertiary alcohols often resist oxidation under mild conditions, making them useful in certain synthetic pathways.

As a tertiary student, she balanced part-time work with a full course load to pay for her tuition.

Tertiary industries are increasingly relying on digital platforms to reach customers and streamline operations.