Triannual vs. Triennial — What's the Difference?

By Tayyaba Rehman — Updated on November 7, 2023
Triannual means occurring three times a year, while Triennial means occurring once every three years.

Difference Between Triannual and Triennial
Table of Contents
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Key Differences
Triannual events occur more frequently than triennial events, three times annually versus once every three years. A triannual event might be a meeting that happens every four months, while a triennial event could be a festival that occurs every thirty-six months.

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Nov 07, 2023
A triannual publication, such as a journal, would release three issues within a year, whereas a triennial publication would issue once in three years. These temporal distinctions are crucial in contexts where precise scheduling is essential, such as academic conferences or financial reporting.

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Financial reports may be conducted on a triannual basis for companies with dynamic performance shifts, while a triennial report might suit a stable trust fund with long-term investments. A triannual occurrence is thus more aligned with short-term assessments, whereas a triennial occurrence fits long-term evaluations.

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Scholarly projects may require triannual updates due to the rapidly evolving nature of research, whereas commemorative events, which celebrate milestones, are more suited to a triennial schedule. The choice between triannual and triennial scheduling can reflect the anticipated changes within the given timeframe.

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Seasonal sales in retail can be triannual, aligned with fashion seasons, while certain agricultural subsidies might be reviewed on a triennial basis, reflecting the longer cycles of planning and harvesting. This illustrates how each term serves specific time-sensitive needs across different industries.

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Comparison Chart
Frequency
Three times per year
Once every three years

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Context Usage
Often for reports, meetings, and publications
For events, anniversaries, and assessments

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Scheduling
Quarterly or four-month intervals
Every 36 months

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Planning Horizon
Suitable for short-term plans
Suitable for long-term plans

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Industry Example
Fashion seasons, academic updates
Agricultural planning, festivals

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Compare with Definitions
Triannual
Published thrice yearly
The journal's triannual edition featured the latest research.

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Triennial
Happening once every three years
The triennial conference was postponed due to budget cuts.

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Triannual
Every four months
Employees receive triannual performance reviews.

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Triennial
Occurring thrice per decade
The town's triennial festival commemorates its founding.

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Triannual
Three times annually
The triannual budget report was released in April.

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Triennial
Recurring triennially
A triennial art exhibition celebrates regional artists.

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Triannual
Periodic, within a year
The committee convenes triannual strategic sessions.

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Triennial
Every third year
The garden club's triennial plant sale is a community highlight.

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Triannual
Occurring three times a year
The company holds triannual staff meetings.

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Triennial
A three-year interval
The organization conducts a triennial assessment of its programs.

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Triannual
Happening three times each year.

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May 29, 2018
Triennial
Occurring every third year.

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Triennial
Lasting three years.

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Triennial
A third anniversary.

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Triennial
A ceremony or celebration occurring every three years.

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Triennial
Happening every three years.
Triennial elections

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Triennial
Lasting for three years.
Triennial parliaments; a triennial reign

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Triennial
A third anniversary.

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Triennial
A plant that requires three years to complete its life-cycle.

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Triennial
Continuing three years; as, triennial parliaments; a triennial reign.

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May 29, 2018
Triennial
Happening, coming about, or appearing once in every three years; as, triennial elections; a triennial catalogue; a triennial visitation.

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May 29, 2018
Triennial
Something which takes place or appears once in three years.

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Triennial
The 300th anniversary (or the celebration of it)

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Triennial
Occurring every third year or lasting 3 years

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Common Curiosities
Can triannual refer to events not strictly tied to a calendar year?
Yes, triannual events can occur within any twelve-month period, not just a calendar year.

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Are triennial events less common than triannual ones?
Triennial events are less frequent by nature, so they may be less common than triannual occurrences.

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Does triannual mean three times a year?
Yes, triannual refers to something happening three times within a single year.

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What does triennial mean?
Triennial means occurring once every three years.

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Are there any triannual holidays?
Traditional holidays are annual, not triannual, though some events may occur triannually.

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Is a triannual event the same as a quarterly event?
No, triannual is three times a year, while quarterly is four times a year.

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Could a company's fiscal report be triennial?
Typically, fiscal reports are annual or triannual, not triennial, due to the need for more frequent financial oversight.

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Can an organization hold both triannual and triennial events?
Yes, an organization can schedule both triannual and triennial events for different purposes.

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How do you pronounce triannual and triennial?
Triannual is pronounced try-AN-yoo-uhl, and triennial is pronounced try-EN-ee-uhl.

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Does triennial imply a longer commitment than triannual?
Yes, triennial implies a commitment stretched over three years, while triannual is within one year.

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Do triennial events require more planning?
Triennial events might require more long-term planning due to their infrequency.

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Can a journal be both triannual and triennial?
No, a journal cannot be both; it must adhere to one of the two schedules.

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Is there a specific symbol or term that denotes triannual events?
No, there isn't a specific symbol; the term "triannual" itself is used.

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Can a sports tournament be triennial?
Yes, some sports tournaments or competitions are held on a triennial basis.

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Could a lease agreement be triennial?
Yes, lease agreements can be triennial, setting terms for every three years.

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Written by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.