Omega Symbol
About Omega Symbol
ω is the Omega Symbol, the lowercase form of the 24th letter of the Greek alphabet (Ω / ω). The Omega Symbol ω is among the most common Greek letters in scientific and technical literature, frequently used for It denotes angular frequency, the complex unit in circuits, and symbolizes 'the last/ultimate'.
【Pronunciation】 In English, ω is most often pronounced oh-MAY-guh or oh-MEG-uh (IPA: /oʊˈmeɪɡə, oʊˈmɛɡə/). This is simply the anglicized name of the Greek letter.
The lowercase Omega Symbol ω is written as a distinct Greek glyph and is assigned codepoint U+03C9 in the Greek and Coptic Unicode block. In plain or sans-serif fonts it can be mistaken for the Latin letter w or Ω, so verify the typeface or context.
【Historical Origin】 Omega is the final letter of the Greek alphabet and shares its glyph with the ohm unit (U+2126) in electrical engineering.
【Common Uses】 ω is highly active across disciplines: It denotes angular frequency, the complex unit in circuits, and symbolizes 'the last/ultimate'. It often appears alongside the uppercase Sigma Σ and lowercase Sigma σ in formulas, papers, and engineering drawings.
How to Type Omega Symbol
Windows Input
Method 1: Hold Alt and type 969 on the numeric keypad, then release Alt to get ω.
Mac Input
Method 2: Press Control + Command + Space to open the Character Viewer, search for 'greek' or 'Omega Symbol', then select ω.
HTML/CSS Input
Method 3: HTML: ω or ω or ω; CSS: content: "\03C9";
LaTeX Input
Method 4: Use the \omega command in LaTeX math mode to produce ω.
Omega Symbol FAQ
How is ω pronounced?
The English pronunciation of ω is oh-MAY-guh or oh-MEG-uh (IPA: /oʊˈmeɪɡə, oʊˈmɛɡə/). It is the anglicized name of the Greek letter, used directly rather than described as 'lowercase ω'.
What is the difference between ω and the Latin letter w or Ω?
ω (U+03C9) is a Greek lowercase letter, whereas w or Ω is a Latin letter; their codepoints and glyphs differ. In a proper typeface ω and w or Ω are clearly distinct, but in plain text or sans-serif fonts they can be confused, so rely on context.
How do I type ω in Word, web pages, and LaTeX?
On Windows use Alt+969 on the numeric keypad; on Mac open the Character Viewer and search 'greek' or 'Omega Symbol'; on the web use the HTML entity ω; in LaTeX use \omega. For bulk use, copy ω directly from this page.