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Millenium vs. Millennium — Which is Correct Spelling?

Edited by Tayyaba Rehman — By Fiza Rafique — Updated on March 19, 2024
"Millenium" is an incorrect spelling, while "millennium" is the correct spelling referring to a period of 1,000 years.
Millenium vs. Millennium — Which is Correct Spelling?

Which is correct: Millenium or Millennium

How to spell Millennium?


Incorrect Spelling


Correct Spelling

Key Differences

Remember "mill" for a thousand, and "ennium" for years.
Mnemonic: “A MILLION years isn't a millennium; it's just a thousand times two Ls and two Ns.”
Think of two "L"s and two "N"s for 2,000 – half of 1,000 for each pair.
Associate "millennium" with "centennial" which also has double "N"s.
Visualize "millennium" as a thousand-year period needing more letters.

How Do You Spell Millennium Correctly?

Incorrect: Many significant events happened over the last millenium.
Correct: Many significant events happened over the last millennium.
Incorrect: The project is planned to be a millenium achievement.
Correct: The project is planned to be a millennium achievement.
Incorrect: The museum exhibit showcased artifacts from the past millenium.
Correct: The museum exhibit showcased artifacts from the past millennium.
Incorrect: We entered a new millenium in the year 2000.
Correct: We entered a new millennium in the year 2000.
Incorrect: Predictions for the next millenium are full of technological advances.
Correct: Predictions for the next millennium are full of technological advances.

Millennium Definitions

A thousandth anniversary or its celebration.
Many countries celebrated the millennium with grand events in 2000.
A span of 1,000 years used as a reference point in dating.
The art dates back to the second millennium BCE.
A significant period or era, especially referring to future hopes or the Christian Second Coming.
Some believe in a future millennial kingdom.
A period of 1,000 years.
The turn of the last millennium was in 2000.
A noteworthy period marked by a particular characteristic or event.
The invention of the internet began a technological millennium.
A millennium (plural millennia or millenniums) is a period of one thousand years, sometimes called a kiloannum (ka), or kiloyear (ky). Sometimes, the word is used specifically for periods of a thousand years that begin at the starting point (initial reference point) of the calendar in consideration (typically the year "1") and at later years that are whole number multiples of a thousand years after the start point.
A period of a thousand years, especially when calculated from the traditional date of the birth of Christ
Silver first came into use on a substantial scale during the 3rd millennium BC
An anniversary of a thousand years
The millennium of the Russian Orthodox Church
A span of one thousand years.
A thousand-year period of holiness mentioned in the book of Revelation, during which Jesus and his faithful followers are to rule on earth.
A hoped-for period of joy, serenity, prosperity, and justice.
A thousandth anniversary.
A period of time consisting of one thousand years.
(Christianity) The period of one thousand years during which Christ will reign on earth (according to Millenarianist interpretations).
A period of universal happiness, peace or prosperity; a utopia.
(with definite article) The year in which one period of one thousand years ends and another begins, especially the year 2000.
A huge fireworks display was put on in Sydney to celebrate the millennium.
A period of one thousand years.
The period of a thousand years mentioned in the twentieth chapter of Revelation, during which holiness is to be triumphant throughout the world. Some believe that, during this period, Christ will reign on earth in person with his saints.
A long period of happiness, righteousness, and prosperity, usually considered as being in the indefinite future.
A thousandth anniversary;
A span of 1000 years
(New Testament) in Revelations it is foretold that those faithful to Jesus will reign with Jesus over the earth for a thousand years; the meaning of these words have been much debated; some denominations (e.g. Jehovah's Witnesses) expect it to be a thousand years of justice and peace and happiness
The 1000th anniversary (or the celebration of it)

Millennium Meaning in a Sentence

The new millennium brought significant technological advancements.
The turn of the millennium was celebrated worldwide with fireworks and festivities.
The concept of a millennium is significant in various cultures and religions.
The company's vision extends into the next millennium with innovative projects.
The ancient civilization's calendar predicted significant events every millennium.
Many books about the future speculate on what the next millennium might hold.
The millennium clock counts down the years of the current thousand-year period.
Environmentalists are focused on sustainability goals for this millennium.
The bridge was designed to last a millennium due to its advanced materials.
Celebrating the millennium, the city unveiled a new public art installation.
The library curated a special collection to commemorate the millennium.
The turn of the millennium saw the birth of a new era in music.
Architects are designing buildings to stand as millennium landmarks.
The concept of peace for a millennium inspires global movements.
Millennium goals include ending poverty and hunger worldwide.
Documentaries about the millennium feature significant global changes over the past centuries.
A millennium festival showcased cultures from around the world.
Every millennium brings its challenges and opportunities for humanity.
The year 2000 was marked as the beginning of the 21st century and new millennium.
The millennium celebration highlighted achievements of the past 1000 years.
A millennium committee was formed to plan decade-long environmental initiatives.
Schools organized millennium time capsules to be opened in a thousand years.
Discussions about the next millennium often include predictions about space exploration.
Celebrations at the start of the millennium emphasized unity and hope for the future.

Millennium Idioms & Phrases

Once in a millennium

An event or opportunity that is very rare or happens once in a thousand years.
The comet's appearance is a once in a millennium event.

The turn of the millennium

The transition from one millennium to another, especially from the 20th to the 21st century.
The turn of the millennium was celebrated with grand events worldwide.

Millennium fever

The excitement and speculation leading up to the start of a new millennium.
Millennium fever captured the world's imagination with predictions of both doom and innovation.

Millennium project

A significant project aimed to be completed by a millennium milestone.
The bridge was considered a millennium project due to its scale and significance.

Millennium vision

A long-term vision or plan extending into the next millennium.
The environmental strategy outlined a millennium vision for a sustainable planet.

Millennium pact

An agreement or pact aiming for long-term peace or cooperation, symbolically starting from a new millennium.
The countries signed a millennium pact to work together against climate change.

Millennium goal

A target or objective set to be achieved within a millennium or by a specific millennium anniversary.
The United Nations set millennium goals to tackle major global challenges.

Millennium celebration

A festivity or event marking the beginning of a new millennium.
Millennium celebrations around the globe welcomed the 21st century with hope and joy.

Millennium generation

The generation of people born around the turn of the millennium.
The millennium generation is tech-savvy and values social connectivity.

A new millennium dawn

The beginning or onset of a new millennium.
The new millennium dawn brought with it challenges and opportunities for innovation.

Millennium milestone

A significant achievement or event occurring at or marking the beginning of a millennium.
The completion of the global peace treaty was a millennium milestone.

Millennium marker

A physical or symbolic marker commemorating the beginning of a new millennium.
The city erected a millennium marker in the central square.

Millennium countdown

The final countdown leading up to the beginning of a new millennium.
The millennium countdown was broadcasted live on TV channels worldwide.

Millennium challenge

A significant challenge that is identified as a priority for resolution in the new millennium.
Combating climate change is a millennium challenge that requires global cooperation.

Millennium optimism

A hopeful and positive outlook for the future of the new millennium.
The early 2000s were marked by millennium optimism about global progress.

Millennium shift

The change or transition from one millennium to another.
The millennium shift was a time of reflection and anticipation for the future.

Pre-millennium tension

Anxiety or tension about what the turn of the millennium might bring.
In the late 1990s, many experienced pre-millennium tension due to uncertain forecasts.

Millennium legacy

The lasting impact or legacy of a particular millennium.
The millennium legacy of technological innovation changed how we communicate.

Post-millennium era

The period following the start of a new millennium.
In the post-millennium era, digital technology became integral to daily life.

Into the next millennium

Moving forward or extending into the upcoming millennium.
The space exploration plans are aimed into the next millennium, focusing on Mars colonization.

Common Curiosities

What is the verb form of millennium?

There isn't a verb form for "millennium."

What is the root word of millennium?

The Latin words "mille" (thousand) and "annus" (year) are the roots.

What is the pronunciation of millennium?

Millennium is pronounced as /mɪˈlɛniəm/.

Which preposition is used with millennium?

Prepositions like "in," "of," or "during" can be used, depending on context.

Why is it called millennium?

It comes from the Latin "mille," meaning "thousand," and "annus," meaning "year."

What is the plural form of millennium?

The plural is "millennia" or "millenniums."

Is millennium an abstract noun?

No, it represents a specific measure of time.

Which vowel is used before millennium?

The vowel "i" is used before the double 'l' in "millennium."

Which conjunction is used with millennium?

Standard conjunctions like "and," "but," or "or" can be used with "millennium."

Is millennium an adverb?

No, millennium is not an adverb.

Is the word millennium imperative?

No, as it's a noun.

What is the singular form of millennium?

Millennium is the singular form.

What is a stressed syllable in millennium?

The second syllable "len" is stressed in "millennium."

What is the opposite of millennium?

There isn't a direct opposite, but a shorter time frame like "moment" or "instant" contrasts its length.

What is the second form of millennium?

Again, "millennium" doesn't have verb forms.

Is millennium a noun or adjective?

Millennium is a noun.

What is the first form of millennium?

As a noun, "millennium" doesn't have verb forms.

Which article is used with millennium?

Both definite ("the") and indefinite ("a") articles can be used with "millennium."

Is millennium a negative or positive word?

Neutral. Its connotation depends on context.

Is millennium a collective noun?

No, it is not a collective noun.

Is the millennium term a metaphor?

Not inherently, but it can be used metaphorically, e.g., "a millennium of happiness."

What part of speech is millennium?

Millennium is a noun.

Which determiner is used with millennium?

Determiners like "this," "that," or "each" can be used with "millennium."

What is the third form of millennium?

Millennium doesn't have verb forms, being a noun.

Is millennium a vowel or consonant?

Millennium is a word containing both vowels and consonants.

What is another term for millennium?

Another term could be "thousand years."

How is millennium used in a sentence?

The turn of the new millennium brought both excitement and apprehension worldwide.

Is millennium a countable noun?

Yes, it is a countable noun.

How many syllables are in millennium?

Millennium has four syllables.

How do we divide millennium into syllables?

Millennium is divided as mil-len-ni-um.

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Author Spotlight

Written by
Fiza Rafique
Fiza Rafique is a skilled content writer at, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to 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.

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