radiation symbol
Nuclear hazard sign
The radiation symbol is a distinctive trefoil design—three triangular blades arranged around a central circle—used internationally to warn of radioactive materials or ionizing radiation hazards.
The symbol appears on signs, containers, and equipment where radiation exposure is possible: The door was marked with a radiation symbol.
Also called a trefoil or radioactivity symbol.
- radioactiveEmitting nuclear decay particles
- hazardSource of potential harm
- warningAlert about danger
- danger zoneHigh-risk location
- no entryAccess not permitted
nuclear · nuclear power · yellow · black · yellow and black · trefoil · danger · isotope · fallout · fallout shelter · Chernobyl · uranium · toxic · contamination · Geiger · Geiger counter · hazmat suit · reactor
- safety alertswarning sign, caution sign, danger sign, hazard sign, warning light
- safety signswarning sign, warning signs, danger sign, caution sign, warning labels
- symbolsrunes, asterisks, glyph, yin-yang, skull crossbones
- radiation safetydosimeter, lead apron, dosimeters, Geiger counter, lead aprons
- Medical Symbolscaduceus, red cross, green cross, medical bag, stethoscope
- warningswarning, alert, caution, danger, warning sign