U+2238 "∸" Dot Minus Unicode Character
Unicode Version 17.0
∸
U+2238 "∸" Dot Minus is a mathematical symbol typically used to represent a subtraction operation that may be undefined or limited, such as in the context of arithmetic on natural numbers where a minus b is defined only when a is greater than or equal to b, or in the case of the saturating subtraction operation in certain mathematical and computer science domains. It visually consists of a standard minus sign with a dot placed directly above it, distinguishing it from the plain minus sign and other related operators. This character is part of the Unicode Mathematical Operators block and is applied in formal logic and number theory to indicate a truncated or non-commutative subtraction.
General Properties
| Code Point | U+2238 |
| Version Added | 1.1 |
| Name | Dot Minus |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ∸ |
| HTML Hex Encoding | ∸ |
| UTF-8 Encoding | 0xE2 0x88 0xB8 |
| UTF-16 Encoding | 0x2238 |
| UTF-32 Encoding | 0x00002238 |
| C/C++/Java Escape | \u2238 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |