Spiritual & interpretive symbols
Historical & archaeological
Ankh
An ancient Egyptian hieroglyphic sign shaped like a cross with a looped top, signifying life.
Mathematical
Infinity symbol
A sideways figure-eight (∞) denoting an unbounded quantity in mathematics, and used more broadly as a symbol of endlessness.
Religious
Om (Aum)
The sacred syllable and symbol ॐ, representing the totality of existence in Hinduism, and used with distinct meanings in Buddhism, Jainism and Sikhism.
Spiritual & interpretive
Yin and yang
A circle divided by an S-curve into a dark and a light half, each containing a dot of the other.