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adjective

tertiary

TUR-shee-air-ee

Tertiary (adjective) means Third in order, rank or importance, coming after primary and secondary. Example: “Tertiary causes of the collapse were noted but not investigated.”

adjective
1
Third in order, rank or importance, coming after primary and secondary.
"Tertiary causes of the collapse were noted but not investigated."
"The hospital is a tertiary referral centre for burns."
2
Relating to education that comes after secondary school, such as university or college.
"Around half of school leavers go on to tertiary education."
3
In economics, relating to the part of an economy that provides services rather than extracting raw materials or manufacturing goods.
"Tourism and finance dominate the tertiary sector."

How to Use Tertiary

Learner’s notes

In plain EnglishThe third one in a sequence, after the first and second.

When to use it

Formal and technical, common in medicine, education policy, economics and colour theory.

Memory tip

The sequence runs primary, secondary, tertiary, quaternary. Tertiary always means third, never merely minor, although what is third is often less important.

Trace the full origin ↓
Easily confused with
Common pairings
tertiary education tertiary sector tertiary care tertiary colours
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Fill the Gap

Can you complete this real example?

_____ causes of the collapse were noted but not investigated.

Etymology

From Latin tertiarius 'of or containing a third part', from tertius 'third'.

Origin: Latin

third-level third-order post-secondary higher

Related Words

Rhymes for tertiary

See all rhymes for tertiary →

Frequently Asked Questions

What is the difference between primary, secondary and tertiary?

Primary is first, secondary is second and tertiary is third in a ranked sequence. In healthcare, primary care is your GP, secondary care is a hospital specialist you are referred to, and tertiary care is a highly specialised centre for complex cases.

What is tertiary education?

Tertiary education is any formal study undertaken after secondary school, including universities, technical institutes and vocational colleges. The term is standard in Britain, Australia and New Zealand, where Americans would usually say higher education or college.

What are tertiary colours?

Tertiary colours are made by mixing a primary colour with a neighbouring secondary colour, giving shades such as red-orange, yellow-green and blue-violet. There are six of them on a standard twelve-part colour wheel.

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Definitions: FreeDict original editorial · etymology from FreeDict original editorial