U+2297 Circled Times
U+2297 was added in Unicode version 1.1 in 1993. It belongs to the block
This character is a Math Symbol and is commonly used, that is, in no specific script. The character is also known as tensor product and vector pointing into page.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+2297 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
The CLDR project calls this character “circled times” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: product, tensor.
The Wikipedia has the following information about this codepoint:
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 $V\times W\to V\otimes W$ that maps a pair $(v,w),\text{}v\in V,w\in W$ to an element of $V\otimes W$ denoted $v\otimes w.$
An element of the form $v\otimes w$ is called the tensor product of v and w. An element of $V\otimes W$ is a tensor, and the tensor product of two vectors is sometimes called an elementary tensor or a decomposable tensor. The elementary tensors span $V\otimes W$ in the sense that every element of $V\otimes W$ is a sum of elementary tensors. If bases are given for V and W, a basis of $V\otimes W$ is formed by all tensor products of a basis element of V and a basis element of W.
The tensor product of two vector spaces captures the properties of all bilinear maps in the sense that a bilinear map from $V\times W$ into another vector space Z factors uniquely through a linear map $V\otimes W\to Z$ (see Universal property).
Tensor products are used in many application areas, including physics and engineering. For example, in general relativity, the gravitational field is described through the metric tensor, which is a vector field of tensors, one at each point of the spacetime manifold, and each belonging to the tensor product with itself of the cotangent space at the point.
Representations
System  Representation 

Nº  8855 
UTF8  E2 8A 97 
UTF16  22 97 
UTF32  00 00 22 97 
URLQuoted  %E2%8A%97 
HTML hex reference  ⊗ 
Wrong windows1252 Mojibake  âŠ— 
HTML named entity  ⊗ 
HTML named entity  ⊗ 
alias  tensor product 
alias  vector pointing into page 
L^{A}T_{E}X  \otimes 
Adobe Glyph List  circlemultiply 
Adobe Glyph List  timescircle 
Related Characters
Confusables
Elsewhere
Complete Record
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1.1 (1993)  
CIRCLED TIMES  
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