radioactive symbol
Nuclear hazard emblem
The radioactive symbol is the international warning sign for ionizing radiation—three black triangular segments arranged around a central circle, resembling a stylized propeller or trefoil.
It appears on containers, equipment, and facilities where radioactive materials are present: The door was marked with a radioactive symbol.
Also called the radiation symbol or trefoil.
- trefoilThree-lobed decorative motif
- hazardSource of potential harm
- danger zoneHigh-risk location
- nuclearOf atomic energy
- yellow and blackTwo contrasting warning shades
yellow · black · warning · toxic · danger · uranium · fallout · isotope · decay · contamination · no-go zone · Chernobyl · glowing · reactor · power plant · waste · biohazard · caution
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