tertiary
adj. C1 Advanced US //ˈtɝʃɝi// UK //tˈɜːʃjəɹi// ter·tiary
adj. third in order or importance. You use it to describe the final stage in a three-part sequence, like tertiary education after primary and secondary school.
adj. ranking third in a sequence of three; denoting the final stage of development, education, or industrial processing. Typically used attributively before a noun.
She is studying for her tertiary degree.
The government invested heavily in tertiary education to improve the workforce's skills.
The tertiary sector of the economy, comprising services rather than manufacturing, now dominates the national GDP.
See tertiary.
Usage
Often used in fixed phrases like 'tertiary education' or 'tertiary industry'.