⊖ is the Unicode character "circled minus" (U+2296). ⊖ is also known as the Plimsoll symbol. ⊖ may refer to:

• Symmetric difference, the set of elements which are in either of two sets but not in their intersection
• Erosion (morphology), one of the fundamental operations in morphological image processing
• A function for reversal and rotation in the APL programming language
• Symbol for the Escape character in ISO 2047
• Used to designate a thermodynamic quantity in the Standard state in chemistry
• Part of the notation for Standard enthalpy of reaction, as in ΔH^⊖_reaction

Look up ⊖ in Wiktionary, the free dictionary.

• Celtic cross
• Coptic cross
• Cross symbol
• Ø (disambiguation)
• ⊗
• ⊕ (disambiguation)
• 𐃏
• ⴲ (U+2D32, tifinagh letter yabh)
• ⦵ (U+29B5, CIRCLE WITH HORIZONTAL BAR)

This disambiguation page lists articles associated with the title ⊖.
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