What 𝐰 means
It is a math-styled w; the formula decides its role.
In physics and engineering, a bold Latin letter commonly marks a vector, a quantity with both size and direction. That is a convention, not a fixed dictionary meaning: the same 𝐰 can represent different things in different equations.
Is mathematical bold w the same as bold text?
No; here, bold can distinguish a mathematical symbol.
Styles such as bold distinguish individual letters in mathematical notation; Unicode 3.1 expanded an older, smaller set of letterlike symbols into broad mathematical alphabets. That date marks the digital repertoire, not the start of bold type in mathematics.
By 2026, mathematical bold letters also served as visual stand-ins for bold text in posts that did not offer text styling. In that setting, 𝐰 can read as emphasis instead of a variable.
Part of the collection
What it means when someone sends it to you
2 readingsA mathematically styled letter; the formula gives its role.
Don't confuse it with
1
Questions people ask
1Does NFKC turn bold w into ordinary w?
Yes. If a program applies NFKC or NFKD, two compatibility-normalization forms, it maps this math-styled letter to plain w and drops the bold distinction.
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How to type or find 𝐰
- Search it as
- bold w · fancy w · math w
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝐰\1D430Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.