Ankh
Ancient Egyptian hieroglyph representing life and immortality.
Ancient Egyptian · c. 3100 BCE – present
Encyclopedia of Symbols
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Discover the meaning, origin, and context of symbols from every culture, discipline, and international standard — from ancient glyphs to modern safety signs.
Featured Symbols
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Om (Aum)
Sacred syllable and symbol in Hinduism, Buddhism, and Jainism.
Hindu, Buddhist, Jain · c. 1500 BCE – present
Yin and Yang (Taijitu)
Taoist symbol representing the duality and interdependence of opposing forces.
Chinese/Taoist · c. 1000 CE – present
Infinity Symbol (∞)
Mathematical symbol representing an unbounded quantity or the concept of endlessness.
Mathematical/Western · 1655 – present
Pi (π)
Mathematical constant representing the ratio of a circle's circumference to its diameter.
Mathematical/Western · 1706 – present
Stop Sign
Octagonal red traffic sign requiring vehicles to come to a complete stop.
International · 1915 – present
Skull and Crossbones
Universal symbol for poison, toxic substances, and mortal danger.
International · c. 1400 CE – present
Biohazard Symbol
Symbol warning of biological substances that pose a threat to living organisms.
International · 1966 – present
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Cultural & ReligiousSymbols from world religions, mythologies, and cultural traditions spanning thousands of years.MathematicalNotation and symbols used in mathematics, logic, and formal sciences, including Unicode mathematical operators.Traffic & Public InformationRoad signs, wayfinding symbols, and public information pictograms used in transportation infrastructure worldwide.Hazard & SafetyWarning, danger, and safety symbols from GHS, ISO 7010, and occupational safety standards.Electrical & ElectronicSchematic symbols for electrical components, circuits, and systems per IEC, ANSI, and ГОСТ standards.Scientific & TechnicalSymbols used in physics, chemistry, engineering, and technical documentation.Medical & HealthSymbols used in healthcare, pharmacy, and medical documentation.Ecology & EnvironmentSymbols representing environmental concepts, recycling, and ecological systems.
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