Radioactive Sign
Radioactive Sign has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ☢
- Unicode
- U+2622
About this symbol
The radiation trefoil was sketched in 1946 at the Radiation Laboratory of the University of California, Berkeley. The first versions were magenta on a blue background; the yellow and black now used was chosen later because it stands out better.
The design is meant to suggest activity radiating from an atom, and its three blades have no official meaning.
Unicode facts
- Official name
- RADIOACTIVE SIGN
- Type
- Symbol
- Unicode block
- Miscellaneous Symbols
- Unicode group
- Warning signs
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Weather, Zodiac, Chess and Card Symbols chart for related characters.