Tertiary can refer to several things, depending on the context:
* Tertiary education: This refers to higher education after secondary school, such as universities and colleges.
* Tertiary sector: This refers to the service sector of the economy, which includes businesses like healthcare, finance, education, and tourism.
* Tertiary period: This is a geological period within the Cenozoic Era, lasting from about 66 million to 2.6 million years ago.
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