↼
Arrow 45
- Unicode
- U+21BC
- Category
- Arrows
- HTML Entity
- ↼
- CSS
- \21BC
The ↼ symbol, officially known as the Leftwards Harpoon with Barb Upwards, is a specialized arrow character featuring a single upper barb. It is widely used in scientific and mathematical notation, most notably in chemistry alongside its right-facing counterpart (⇀) to denote reversible reactions and chemical equilibrium. Typographically, it offers a distinct alternative to standard full-headed arrows for representing specific vectors, restrictions, or weak limits.
How to Type
- Windows
- Alt+8636 or type 21BC followed by Alt+X in supported apps
- macOS
- Control+Command+Space then search 'leftwards harpoon'
- Linux
- Ctrl+Shift+U then 21bc
- HTML
- ↼ or ↼
In Programming
In LaTeX and technical documentation, this symbol is commonly rendered using `\leftharpoonup` to denote weak convergence in mathematics or half of an equilibrium equation in chemistry.
Tags
arrow
barb up arrow
chemical equilibrium arrow
chemistry arrow
equilibrium notation
half arrow left
harpoon
harpoon arrow chemistry
left
math
reversible reaction symbol
upper
vector arrow math