Letterlike Symbols facts for kids
Letterlike Symbols are a special group of 80 symbols found in Unicode. Think of Unicode as a huge library of all the characters and symbols used in writing around the world. Many of these letterlike symbols look like letters from different alphabets, but they are often used for special purposes, especially in mathematics and science.
These symbols help people write complex ideas in a clear and short way. For example, instead of writing "the set of all complex numbers," mathematicians can just use a single symbol.
What Are Letterlike Symbols?
Letterlike symbols are characters that resemble letters but have unique meanings. They are not just regular letters you type every day. They often represent specific concepts, units of measurement, or mathematical ideas.
For example, some symbols might stand for:
- Units of temperature like Celsius or Fahrenheit.
- Important numbers or sets of numbers in math.
- Special constants used in physics or engineering.
- Abbreviations for common words or phrases.
These symbols make it easier to communicate complex information quickly and accurately, especially in fields like science, engineering, and finance.
Common Letterlike Symbols and Their Meanings
Here's a look at some of the letterlike symbols and what they mean. You might see some of these in your math or science classes!
| Symbol | Image | What it Means | Code |
|---|---|---|---|
| ℀ |  |
Short for "account." Used in banking. | U+2100 |
| ℁ |  |
Means "addressed to the subject." | U+2101 |
| ℂ |  |
A bold capital C. Used for complex numbers in math. | U+2102 |
| ℃ |  |
The symbol for Celsius, a way to measure temperature. | U+2103 |
| ℄ |  |
Stands for "centerline." This is a line that divides a shape into two equal parts. | U+2104 |
| ℅ |  |
Short for "care of." Used when sending mail to someone at another person's address. | U+2105 |
| ℆ |  |
Short for "cada una," which means "each one" in Spanish. | U+2106 |
| ℇ |  |
Symbol for Euler's constant, a special number in math. | U+2107 |
| ℈ |  |
Symbol for the scruple, an old unit of weight. | U+2108 |
| ℉ |  |
The symbol for Fahrenheit, another way to measure temperature. | U+2109 |
| ℊ |  |
A fancy, script-style lowercase G. | U+210A |
| ℋ |  |
A script-style capital H. Used in Hamiltonian mechanics (a part of physics). | U+210B |
| ℌ |  |
A fancy, blackletter-style capital H. | U+210C |
| ℍ |  |
A bold capital H. Used for quaternions, which are special numbers in math. | U+210D |
| ℎ |  |
Symbol for the Planck constant, a very important number in physics. | U+210E |
| ℏ |  |
Another symbol related to the Planck constant, used in physics. | U+210F |
| ℐ |  |
A script-style capital I. | U+2110 |
| ℑ |  |
A blackletter-style capital I. | U+2111 |
| ℒ |  |
A script-style capital L. Used for the laplace transform in math. | U+2112 |
| ℓ |  |
A script-style small L. Used as a symbol for liter, a unit of volume. | U+2113 |
| ℔ |  |
Symbol for pounds, a unit of weight. | U+2114 |
| ℕ |  |
A bold capital N. Used for natural numbers (like 1, 2, 3...) in math. | U+2115 |
| № |  |
An abbreviation for "number." It's called the numero sign. | U+2116 |
| ℗ |  |
Symbol for the copyright of a sound recording. | U+2117 |
| ℘ |  |
A script-style capital P. Used for Weierstrass's elliptic functions in math. | U+2118 |
| ℙ |  |
A bold capital P. Used for prime numbers in math. | U+2119 |
| ℚ |  |
A bold capital Q. Used for rational numbers (numbers that can be written as fractions) in math. | U+211A |
| ℛ |  |
A script-style capital R. | U+211B |
| ℜ |  |
A blackletter-style capital R. | U+211C |
| ℝ |  |
A bold capital R. Used for real numbers (all numbers on the number line) in math. | U+211D |
| ℞ |  |
An abbreviation for prescription, often seen on medicine bottles. | U+211E |
| ℟ |  |
Symbol for a "response" in a church service. | U+211F |
| ℠ |  |
Symbol for service marks, like a trademark for services. | U+2120 |
| ℡ |  |
Symbol for telephones. | U+2121 |
| ™ |  |
Symbol for unregistered trademarks. | U+2122 |
| ℣ |  |
Symbol for a "versicle" in a church service. | U+2123 |
| ℤ |  |
A bold capital Z. Used for integers (whole numbers, positive, negative, or zero) in math. | U+2124 |
| ℥ |  |
Symbol for the ounce, a unit of weight. | U+2125 |
| Ω |  |
Symbol for the ohm, a unit of electrical resistance. | U+2126 |
| ℧ |  |
Symbol for the mho, which is another name for the siemens, a unit of electrical conductance. | U+2127 |
| ℨ |  |
A blackletter-style capital Z. | U+2128 |
| ℩ |  |
An upside-down lowercase Iota. Used in logic. | U+2129 |
| K |  |
Symbol for the kelvin, a unit of temperature. | U+212A |
| Å |  |
Symbol for the ångström, a unit of length used for very small things. | U+212B |
| ℬ |  |
A script-style capital B. Used for Bloch space in math. | U+212C |
| ℭ |  |
A blackletter-style capital C. | U+212D |
| ℮ |  |
Symbol used on packaging in Europe to show an estimated amount. | U+212E |
| ℯ |  |
A mathematical constant (a special number). | U+212F |
| ℰ |  |
A script-style capital E. Used for electromotive force (like voltage). | U+2130 |
| ℱ |  |
A script-style capital F. Used for the Fourier transform in math. | U+2131 |
| Ⅎ |  |
One of the three Claudian letters, old Roman letters. | U+2132 |
| ℳ |  |
A script-style capital M. Used as the German gold mark symbol (an old currency). | U+2133 |
| ℴ |  |
A script-style small O. | U+2134 |
| ℵ |  |
The Hebrew letter Aleph. Used for aleph numbers in math. | U+2135 |
| ℶ |  |
The Hebrew letter Bet. Used for beth numbers in math. | U+2136 |
| ℷ |  |
The Hebrew letter Gimel. Used for the gimel function in math. | U+2137 |
| ℸ |  |
The Hebrew letter Dalet. | U+2138 |
| ℹ |  |
Symbol for information. | U+2139 |
| ℺ |  |
A rotated capital Q. Used for signature marks (like on old books). | U+213A |
| ℻ |  |
Symbol for fax machines. | U+213B |
| ℼ |  |
A bold lowercase pi. Pi is a famous number in math (about circles). | U+213C |
| ℽ |  |
A bold lowercase gamma. Gamma is a letter from the Greek alphabet. | U+213D |
| ℾ |  |
A bold capital gamma. | U+213E |
| ℿ |  |
A bold capital pi. | U+213F |
| ⅀ |  |
A bold symbol for summation (adding many things together). | U+2140 |
| ⅁ |  |
An upside-down G. | U+2141 |
| ⅂ |  |
An upside-down L. | U+2142 |
| ⅃ |  |
An L that is flipped horizontally. | U+2143 |
| ⅄ |  |
An upside-down R. | U+2144 |
| ⅅ |  |
A bold and italic capital D. Used for differentials in calculus. | U+2145 |
| ⅆ |  |
A bold and italic lowercase D. Also used for differentials. | U+2146 |
| ⅇ |  |
A bold and italic lowercase E. Used for natural exponents in math. | U+2147 |
| ⅈ |  |
A bold and italic lowercase I. Used for imaginary units in math. | U+2148 |
| ⅉ |  |
A bold and italic lowercase J. Also used for imaginary units. | U+2149 |
| ⅊ |  |
Symbol used for property lines (like on a map). | U+214A |
| ⅋ |  |
An upside-down ampersand (&). Used in linear logic. | U+214B |
| ⅌ |  |
An abbreviation for the word "per" (meaning "for each"). | U+214C |
| ⅍ |  |
An abbreviation for "aktieselskab" (a Danish word for a company that sells stocks). | U+214D |
| ⅎ |  |
The lowercase version of the Claudian letter Ⅎ. | U+214E |
| ⅏ |  |
Symbol for a reference written in the Samaritan script (an ancient writing system). | U+214F |
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Letterlike Symbols Facts for Kids. Kiddle Encyclopedia.