GlyphIndexExample notation
Uppercase Ο; lowercase ο.
This is a letter specimen rather than a mathematical convention.
Greek omicron
Omicron appears as uppercase Ο and lowercase ο. Both can resemble Latin O or o, but remain Greek letters.
GREEK CAPITAL LETTER OMICRON
Appearance can vary by font.
Character details
♡→✦
3 code pointsMeaning and context
Omicron appears as uppercase Ο and lowercase ο. Both can resemble Latin O or o, but remain Greek letters.
How to use it
Use Ο or ο when the text is Greek. In mixed-script material, compare the stored characters rather than choosing by their round shape.
Examples
Uppercase and lowercase
Ο U+039F / ο U+03BF
Uppercase and lowercase use different code points. Copy the case you need.
Similar shapes, different characters
Compare the lookalike
U+006FGreek small omicron differs from Latin small o and digit zero.
Greek small omicron
U+03BFCopy the lowercase letter when that is the case used in the source material.
Sources and method
- Unicode 18.0.0 character database — Pinned standard character identities and properties; the application computes UTF encodings from the original text.
- Unicode normalization forms (Unicode 18.0.0)