MINUS SIGN WITH DOT BELOW·U+2A2A

Character Information

Code Point
U+2A2A
HEX
2A2A
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 A8 AA
11100010 10101000 10101010
UTF16 (big Endian)
2A 2A
00101010 00101010
UTF16 (little Endian)
2A 2A
00101010 00101010
UTF32 (big Endian)
00 00 2A 2A
00000000 00000000 00101010 00101010
UTF32 (little Endian)
2A 2A 00 00
00101010 00101010 00000000 00000000
HTML Entity
⨪
URI Encoded
%E2%A8%AA

Description

The Unicode character U+2A2A, known as the "MINUS SIGN WITH DOT BELOW," is a specialized typographic symbol that serves a unique role in digital text. This character is typically utilized to display the mathematical minus sign with an additional visual cue provided by the dot below it. The primary function of this symbol remains the same as the standard minus sign (-), denoting subtraction, negation, or a decrease in value. However, the dot below enhances the readability and accessibility of the character for users with visual impairments or dyslexia, as it provides a subtle indication of the position of the ascender (the top part of lowercase letters) within the symbol. While this character is not widely used across various cultural, linguistic, or technical contexts, its inclusion in Unicode demonstrates the continued effort to make digital text more inclusive and accessible for all users.

How to type the symbol on Windows

Hold Alt and type 10794 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+2A2A. 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+2A2A to binary: 00101010 00101010. 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 10101000 10101010