The symbol 🄯, a horizontally mirrored copyright symbol, denoting copyleft.

plural of copyleft symbol

plural of trademark symbol

The symbol "™", consisting of the letters TM in superscript, used to indicate that a term is a trademark (whether registered or not).

plural of recycling symbol

A symbol universally associated with recyclable materials. It is composed of three crooked arrows arranged as a triangular clockwise Möbius strip.

plural of biohazard symbol

A symbol that is universally recognized as a warning against substances that pose a threat to the health of living organisms, primarily that of humans.

A numero sign.

plural of infinity symbol