Tertiary and Triennial

Tertiary

Tertiary adjective - Coming next after the second and just before the fourth in position.
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Synonyms for Tertiary

Triennial and tertiary are semantically related in after second topic. In some cases you can use "Triennial" instead an adjective "Tertiary".

Triennial

Triennial adjective - Occurring every third year or lasting 3 years.
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Synonyms for Triennial

Tertiary and triennial are semantically related in after second topic. You can use "Tertiary" instead an adjective "Triennial".
Cite this Source
Triennial and Tertiary. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/tertiary/triennial
Tertiary & Triennial. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/tertiary/triennial>.
Triennial or Tertiary. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/tertiary/triennial.
Google Ngram Viewer shows how "tertiary" and "triennial" have occurred on timeline