What 𝚽 means
It is a Greek letter in a math style, not a fixed value.
Its weight can distinguish 𝚽 from plain Φ as separate variables; some mathematical styles use bold for vectors. Read the surrounding formula to learn what this phi names.
The Greek letter came first
Greek adapted the Phoenician alphabet, an older writing system that mainly recorded consonants, then added Φ for a sound its inherited letters did not cover: an aspirated p, or p followed by a puff of breath. Phi likely took shape in the eighth century BCE; its sound later shifted to f, which it represents in Modern Greek.
Part of the collection
Don't confuse it with
2
Related characters
1
Questions people ask
1Why does 𝚽 show up as a box?
A font used by your browser may lack this mathematical glyph or draw it differently. The stored character remains 𝚽 even when the font cannot show it.
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How to type or find 𝚽
- Search it as
- bold phi · math phi · phi symbol · vector phi · phi equation · capital phi · phi variable
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝚽\1D6BD1D6BD (its hexadecimal, or base-16, code) and press Alt+X; some French and German editions use Alt+C.Fn/Globe-E; search mathematical bold capital phi or 1D6BD. Unicode Hex Input accepts only four digits, so it cannot enter this five-digit code.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.