Circled plus

Circled plus (⊕) or n-ary circled plus (⨁) (in Unicode, , ) may refer to:

• Sun cross, a circle containing four or more spokes with many variants and uses
• Earth symbol, astronomical and alchemical symbols for Earth, indicated by
• Coptic cross, associated with Coptic Christians
• Celtic cross, associated with Celtic Christianity in the Early Middle Ages
• Crosses in heraldry, including , and variants thereof

Mathematics and computing

• Direct sum, an operation from abstract algebra
• Dilation (morphology), mathematical morphology
• Tensor product, a mathematical operation indicated by
• Exclusive or, a logical operation that outputs true only when inputs differ

Languages

• Linear A, an undeciphered Minoan script including the character
• Linear B, a syllabary used for writing Mycenaean Greek including the characters and
• Carian alphabets, including the character
• Teth, Phoenician letter
• Tifinagh, a Berber script including the letter

Other uses

• The Zodiac Killer used a cross-circle as a signature for his letters

See also

• List of screw drives
• ⊖ (disambiguation)