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 A variety of symbols or iconographic conventions are used to represent :wikt:Earth, Earth, whether in the sense of Earth, planet Earth, or the world, inhabited world, or as a classical element. A circle representing the round world, with the riv ...

, astronomical and alchemical symbols for Earth, indicated by *

Coptic cross The Coptic cross is any of a number of Christian cross variants associated in some way with Coptic Christians. Typical form The typical form of the "Coptic cross" used in the Coptic Church is made up of two bold lines of equal length that in ...

, associated with Coptic Christians Original_Coptic_cross

Celtic cross upright 0.75 , A Celtic cross symbol The Celtic cross is a form of ringed cross, a Christian cross featuring a nimbus or ring, that emerged in the British Isles and Western Europe in the Early Middle Ages. It became widespread through its u ...

, associated with Celtic Christianity in the Early Middle Ages * Crosses in heraldry, including , and variants thereof In mathematics and computing: *

Direct sum The direct sum is an operation between structures in abstract algebra, a branch of mathematics. It is defined differently but analogously for different kinds of structures. As an example, the direct sum of two abelian groups A and B is anothe ...

, an operation from abstract algebra *

Dilation (morphology) Dilation (usually represented by ⊕) is one of the basic operations in mathematical morphology. Originally developed for binary images, it has been expanded first to grayscale images, and then to complete lattices. The dilation operation usually u ...

, mathematical morphology *

Tensor product In mathematics, the tensor product V \otimes W of two vector spaces V and W (over the same field) is a vector space to which is associated a bilinear map V\times W \rightarrow V\otimes W that maps a pair (v,w),\ v\in V, w\in W to an element of ...

, a mathematical operation indicated by *

Exclusive or Exclusive or, exclusive disjunction, exclusive alternation, logical non-equivalence, or logical inequality is a logical operator whose negation is the logical biconditional. With two inputs, XOR is true if and only if the inputs differ (on ...

, a logical operation that outputs true only when inputs differ In languages: *

Linear A Linear A is a writing system that was used by the Minoans of Crete from 1800 BC to 1450 BC. Linear A was the primary script used in Minoan palaces, palace and religious writings of the Minoan civilization. It evolved into Linear B, ...

, an undeciphered Minoan script including the character *

Linear B Linear B is a syllabary, syllabic script that was used for writing in Mycenaean Greek, the earliest Attested language, attested form of the Greek language. The script predates the Greek alphabet by several centuries, the earliest known examp ...

, a syllabary used for writing Mycenaean Greek including the characters and *

Carian alphabets The Carian alphabets are a number of regional scripts used to write the Carian language of western Anatolia. They consisted of some 30 alphabetic letters, with several geographic variants in Caria and a homogeneous variant attested from the Nile ...

, including the character *

Teth Teth, also written as or Tet, is the ninth letter of the Semitic abjads, including Phoenician ''ṭēt'' 𐤈, Hebrew, Aramaic ''ṭēṯ'' 𐡈, and Syriac ''ṭēṯ'' ܛ, and Arabic ''ṭāʾ'' . It is also related to the Ancient North ...

, Phoenician letter *

Tifinagh Tifinagh ( Tuareg Berber language: ; Neo-Tifinagh: ; Berber Latin alphabet: ; ) is a script used to write the Berber languages. Tifinagh is descended from the ancient Libyco-Berber alphabet. The traditional Tifinagh, sometimes called Tuareg Tifi ...

, a Berber script including the letter Other uses * The

Zodiac Killer The Zodiac Killer is the pseudonym of an unidentified serial killer who murdered five known victims in the San Francisco Bay Area between December 1968 and October 1969. The case has been described as "arguably the most famous unsolved murder ...

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

See also