biohazard symbol
Infectious material marker
The biohazard symbol is a three-lobed design used internationally to mark substances, materials, or areas that pose a danger to living organisms, particularly humans.
Developed in the 1960s, its distinctive shape—three interlocking crescents arranged around a central ring—was specifically designed to be memorable and unlike any existing symbol.
You'll see it on laboratory doors, medical waste containers, and warning labels wherever infectious agents or toxic biological materials are present.
- trefoilThree-lobed decorative motif
- contaminationIntroduction of impurities
- pictogramSymbol using visual likeness
- yellow diamondNitrogen-tinted precious stone
- hazmatToxic materials needing precautions
dangerous · toxic · infectious agents · geometric design · pathogens · OSHA standards · radioactive · public health campaigns · hospitals · laboratories · research facilities · quarantine zone · viruses · biotoxins · medical waste · sharps container · warning sign · safety label
- safety alertswarning sign, caution sign, danger sign, warning light, fire alarm
- symbolsrunes, asterisks, glyph, yin-yang, skull crossbones
- hazmathazmat suit, hazmat, dangerous goods, toxic, hazmat teams
- Biosafetybiosafety, biocontainment, containment suit, decontamination, sterilization
- Medical Symbolscaduceus, red cross, green cross, medical bag, stethoscope
- warningswarning, alert, caution, danger, warning sign
biohazard, hazard, biological, biology, biologist, biome, biomedical, biochemistry, hazardous