Omega

/ˌoʊˈmeɪɡə/ adj, adv, noun, slang

adj, adv, noun, slang ·Common ·High school level

Meaning at a glance

  • Primary sense: The twenty-fourth letter of the Classical and the Modern Greek alphabet, and the twenty-eighth letter of the Old and the Ancient Greek alphabet, i.e. the last letter of every Greek alphabet. Uppercase version: Ω; lowercase: ω.
  • Grammar: omega is listed as adj, adv, noun, slang.
  • Nearest alternatives: angular frequency, apodosis, asymptotic lower bound, catastrophe.
  • Useful contrasts: alpha, alphas, beginning.
  • Usage evidence: I am the Alpha and the Omega, the first and the last, the beginning and the end.

How to use "omega"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "omega" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "omega" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "omega" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "omega" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "omega" is acting as adj, adv, noun, slang in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "angular frequency" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "omega", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    The twenty-fourth letter of the Classical and the Modern Greek alphabet, and the twenty-eighth letter of the Old and the Ancient Greek alphabet, i.e. the last letter of every Greek alphabet. Uppercase version: Ω; lowercase: ω.

    "The fact that the letter was incised above the line indicates that it is probably an omega."

  2. 2
    Alternative letter-case form of omega. alt-of
  3. 3
    the last (24th) letter of the Greek alphabet wordnet
  4. 4
    The end; the final, last or ultimate in a sequence. capitalized, often

    "alpha and omega"

  5. 5
    the ending of a series or sequence wordnet
Show 5 more definitions
  1. 6
    Angular velocity; symbol: ω.

    "The ratio between the rho and omega cross section is obtained."

  2. 7
    A transfinite ordinal number referring to the next position after ordering a countably infinite set.
  3. 8
    An omega male. slang
  4. 9
    The percentage change in an option value divided by the percentage change in the underlying asset's price.
  5. 10
    In omegaverse fiction, a person of a submissive secondary sex driven by biology, magic, or other means to bond with an alpha, with males of this type often being able to get pregnant. slang

    "Often omegas go into heat and release pheromones that drive alphas wild."

Adjective
  1. 1
    Ultimate; of the highest degree. Massive, ineffable. not-comparable, slang

    "Omega props, dude."

Adverb
  1. 1
    Ultimately, most, supremely. not-comparable, slang

    "Whatever your plan is, I just think this idea's omega stupid. Ain't you got something better?"

Synonyms

All synonyms
angular frequencyapodosisasymptotic lower boundcatastropheceasingcessation

Antonyms

alphaalphasbeginningbig-O notation

Example

"I am the Alpha and the Omega, the first and the last, the beginning and the end."

Common questions

What does "omega" mean?

The twenty-fourth letter of the Classical and the Modern Greek alphabet, and the twenty-eighth letter of the Old and the Ancient Greek alphabet, i.e. the last letter of every Greek alphabet. Uppercase version: Ω; lowercase: ω.

What is a synonym for "omega"?

Common synonyms include: angular frequency, apodosis, asymptotic lower bound, catastrophe, ceasing, cessation.

How do you use "omega" in a sentence?

I am the Alpha and the Omega, the first and the last, the beginning and the end.

How do you pronounce "omega"?

Pronounced /ˌoʊˈmeɪɡə/.

Etymology

From Middle English, from Ancient Greek ὦ μέγα (ô méga), meaning “great ω” (omega is a long vowel in Ancient Greek).

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