⊠
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Translingual
Etymology
Compare ⊞, ⊟, ⊠, and ⊡.
Symbol
⊠
- (functional analysis) Free multiplicative convolution
- (computing, dated) ISO 2047 symbol for Enquiry
- (electricity) control cabinet
Usage notes
The alternative symbol of Enquiry looks similar to thicker ✠, which is not available in Unicode.