noun
Uncommon
omega
OH-mih-guh
Omega (noun) means the final letter of the Greek alphabet, symbolizing an ending or the last in a series. Example: “The book's title, "Alpha to Omega," promised to cover everything from start to finish.”
noun
1
The final letter of the Greek alphabet, symbolizing an ending or the last in a series.
"The book's title, "Alpha to Omega," promised to cover everything from start to finish."
"In the Bible, God is called "the Alpha and the Omega.""
"On the maths test, the teacher asked us to write the symbol omega."
2
The final, ultimate point in a sequence or process.
"This project felt like the omega of his career."
"For the old sailor, this last voyage was the omega of a long life at sea."
"The final chapter marked the omega of the whole series."
3
In physics, the symbol used for angular velocity.
"The equation uses omega to represent the wheel's rotational speed."
"In the physics lesson, we wrote omega for how fast the disc was spinning."
"The formula gives the speed as omega multiplied by the radius."
How to use omega
Learner’s notesIn plain EnglishThe last letter of the Greek alphabet, often used to mean "the end" of something.
Easily confused with
Common pairings
alpha and omega
the omega point
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Word forms
- Plural
- omegas, omegala
Fill the gap
Can you complete this real example?
The book's title, "Alpha to _____," promised to cover everything from start to finish.
Etymology
From Greek ō mega, literally "great O," distinguishing it from the short o of omicron.
Synonyms
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Rhymes for omega
See all rhymes for omega →Frequently asked questions
What does “omega” mean?
The word “omega” means the final letter of the Greek alphabet, symbolizing an ending or the last in a series. In plain terms, the last letter of the Greek alphabet, often used to mean "the end" of something.
How do you pronounce “omega”?
“Omega” is pronounced OH-mih-guh (/ˌoʊˈmeɪɡə/ in IPA).
How do you use “omega” in a sentence?
Here is “omega” used in a sentence: “The book's title, "Alpha to Omega," promised to cover everything from start to finish.”
What part of speech is “omega”?
“Omega” is a noun.
Where does the word “omega” come from?
The word “omega” comes from Greek. From Greek ō mega, literally "great O," distinguishing it from the short o of omicron.
Is “omega” a common word?
“Omega” is an uncommon word in modern English.
How many meanings does “omega” have?
“Omega” has 3 distinct senses listed in this dictionary. The most common is: the final letter of the Greek alphabet, symbolizing an ending or the last in a series.
What is the difference between omega and alpha?
Alpha is the first letter of the Greek alphabet and omega is the last, so together they represent a complete range from beginning to end. This pairing is why "alpha and omega" is used to mean the entirety of something, from start to finish.
Why is omega used to represent angular velocity in physics?
Physicists use the lowercase Greek letter omega (ω) as a standard symbol for angular velocity, the rate at which an object rotates around an axis. Greek letters are widely used in physics and engineering as compact symbols for specific quantities, and omega has become the conventional choice for this one.
Why do people say something is the omega of a series?
Calling something the omega of a series means it is the final or ultimate point in that sequence, echoing omega's role as the last letter of the Greek alphabet. It is often paired conceptually with "alpha" to signal a definitive beginning-to-end range.
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