CIRCLED DASH·U+229D

Character Information

Code Point
U+229D
HEX
229D
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 8A 9D
11100010 10001010 10011101
UTF16 (big Endian)
22 9D
00100010 10011101
UTF16 (little Endian)
9D 22
10011101 00100010
UTF32 (big Endian)
00 00 22 9D
00000000 00000000 00100010 10011101
UTF32 (little Endian)
9D 22 00 00
10011101 00100010 00000000 00000000
HTML Entity
⊝
URI Encoded
%E2%8A%9D

Description

The Unicode character U+229D is known as the Circled Dash, a typographical symbol with significant roles in both digital text and various technical applications. This symbol is frequently used to denote a negative number or a subtraction operation in mathematical expressions, particularly within computer programming languages and scientific documents. It also finds use in linguistic contexts where it serves as an indicator of a negation or exception in the text. The character's distinctive design, featuring a straight horizontal line encircled by a circle, makes it easily recognizable and helps prevent confusion with similar symbols. Despite its seemingly simple appearance, the Circled Dash plays an essential part in clear and accurate communication across various fields of study and industry.

How to type the symbol on Windows

Hold Alt and type 8861 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+229D. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format: 1110xxxx 10xxxxxx 10xxxxxx
    Where the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+229D to binary: 00100010 10011101. Those are the payload bits.

  3. Step 3: Fill in the bits to match the bit pattern:

    Obtain the final bytes by arranging the paylod bits to match the bit layout:
    11100010 10001010 10011101