Windows
2 options- In Word / Outlook: type 2622 then press Alt + X.
- Anywhere: press Win + . to open the emoji & symbol picker, then search.
Radioactive Sign
A symbol from the Tech & UI collection. Click the symbol or the button below to copy.
- Symbol
- ☢
- Unicode
- U+2622
- HTML entity
- ☢
- Category
- Tech & UI
Export
Download Radioactive Sign as a vector SVG or a raster PNG.
SVG uses the system font stack — open in any vector editor and convert to outlines if needed. PNGs have a transparent background.
31 of 41 in the tech & ui collection
About the radioactive sign symbol
Commonly known as the radioactive sign or trefoil symbol, this character serves as a universal warning for ionizing radiation. Within the Miscellaneous Symbols block of the Common script, it is represented as a central circle surrounded by three blades. When encountered in text or on physical labels, it is read as a notification of chemical or nuclear hazards.
Practical applications for this symbol are found primarily in safety signage and technical documentation regarding hazardous materials. In social media posts or digital gaming environments, it often denotes toxic zones, power plants, or post-apocalyptic settings. Developers also use it in UI design to indicate destructive actions or system-wide alerts within technical interfaces. In scientific contexts, it acts as a shorthand for radiocarbon dating or medical imaging equipment.
How to type Radioactive Sign
Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.
macOS
2 options- Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 2622.
- Or: Control + Command + Space opens the Character Viewer — search by name.
Linux
1 step- Press Ctrl + Shift + U, type 2622, then press Enter or Space.
Copy in every format
Every form of this character — for HTML, CSS, JavaScript, URLs and more. Click any value to copy.
Text vs emoji presentation
This codepoint has two standardized presentations. Append U+FE0E to force the monochrome text form, or U+FE0F to force the colorful emoji form. Default presentation: text.
Part of the Miscellaneous Symbols block
☢ radioactive sign lives inside the Miscellaneous Symbols Unicode block. Browse every indexed character in Miscellaneous Symbols →
- ♥Black Heart SuitSame Miscellaneous Symbols block→
- ♡White Heart SuitSame Miscellaneous Symbols block→
- ♥︎Black Heart Suit + Variation Selector-15Same Miscellaneous Symbols block→
- ♡︎White Heart Suit + Variation Selector-15Same Miscellaneous Symbols block→
- ★Black StarSame Miscellaneous Symbols block→
- ☆White StarSame Miscellaneous Symbols block→
- ☄CometSame Miscellaneous Symbols block→
- ♈AriesSame Miscellaneous Symbols block→
- ♉TaurusSame Miscellaneous Symbols block→
- ♊GeminiSame Miscellaneous Symbols block→
- ♋CancerSame Miscellaneous Symbols block→
- ♌LeoSame Miscellaneous Symbols block→
Related tech & ui
Other tech & ui you can copy and paste — explore similar Unicode characters from the same family.
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- ⇧Upwards White ArrowCopy the upwards white arrow symbol→
- ⌃Up ArrowheadCopy the up arrowhead symbol→
- ⎋Broken Circle With Northwest ArrowCopy the broken circle with northwest arrow symbol→
- ⏎Return SymbolCopy the return symbol symbol→
- ⌫Erase To The LeftCopy the erase to the left symbol→
- ⌦Erase To The RightCopy the erase to the right symbol→
- ⇪Upwards White Arrow From BarCopy the upwards white arrow from bar symbol→
- ⇥Rightwards Arrow To BarCopy the rightwards arrow to bar symbol→
- ⇤Leftwards Arrow To BarCopy the leftwards arrow to bar symbol→
- ⌽Apl Functional Symbol Circle StileCopy the apl functional symbol circle stile symbol→
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