Looking for one specific symbol? Each page below covers a single character in depth: meaning, history, how to type it, and where it works. Looking for a whole set to browse and copy? See the full library instead.
The library is built for browsing: grids of related symbols you scan and copy from in one pass. This section is built for the opposite job: you already know exactly which symbol you're after, and you want the full story on that one character: its Unicode identity, where it came from, whether it's safe to use in a username, and how to type it without copying it from a page like this every time.
Pulled out of the math symbols library for their own dedicated pages.
Meaning, 1525 origin, and how to type it.
John Wallis's 1655 lemniscate, explained.
Two values in one symbol, and its mirror ∓.
Comparison meaning, and why they can break HTML.
The obelus, and its 1659 origin.
The engineering sign for circular dimensions, and the ∅ it's mistaken for.
A 1631 mark meant to avoid the letter x, and why it gets mistaken for one anyway.
The two superscript digits old enough to predate the rest of the set.
Used by Euler, left out of ASCII, and why code uses != instead.
The geometry-class sign Unicode doesn't even call "congruent."
Bouguer's 1734 refinement of Harriot's strict < and >, and why code uses <= instead.
Pulled out of the special characters library for their own dedicated pages.
A 500-year-old ledger mark, and Ray Tomlinson's 1971 email use.
A Roman ligature for "et," and where its odd name comes from.
The mark lawyers use to cite a specific section.
The paragraph mark hiding in your word processor.
Why it's no longer legally required, and why it still matters.
An unregistered brand claim, and how it differs from ®.
Identical to Greek mu (μ) on screen, a different character underneath.
Pulled out of the punctuation symbols library for their own dedicated pages.
Straight vs. curly quotes, and why pasted quotes break code.
A 1575 punctuation proposal, and why it's not the same move as ¿.
A 1962 ad-man's mashup of ? and !, briefly a real typewriter key.
An ancient footnote mark that became the wildcard and the censor's star.
A scribe's shorthand that became ñ, and the Unix home-folder shortcut.
Typewriter underlining's descendant, now the backbone of snake_case.
One character, not three periods, and six dots wide in Chinese.
Chinese uses it to separate list items; Japanese, as an ordinary pause.
Pulled out of the currency symbols library for their own dedicated pages.
The world's most recognized currency symbol, and its disputed origin.
A currency symbol deliberately designed in 1996.
Over a thousand years old, from the Latin libra.
Shared between the Japanese yen and Chinese yuan.
Chosen by a national design competition in 2010.
Added to Unicode in 2017: now a bio identity marker.
The one common currency symbol with no dedicated keyboard key.
One currency sign shared by two Koreas that aren't on speaking terms.
Decided by a public vote of 284,000+ Russians in 2013.
Only the Philippine peso has its own. The rest just use $.
The UAE's new currency symbol: frozen for Unicode 18.0 publication, not on any keyboard yet.
Oman's new currency symbol: also frozen for Unicode 18.0 publication.
The Maldives' new currency symbol, built from the Thaana letter ރ, accepted, published September 2026.
Already final since Unicode 17.0: a version ahead of the rest of the Gulf.
A Cyrillic Б with a bar through it, approved by the National Bank, still only provisional at U+20C5.
Pulled out of the arrow symbols library for their own dedicated pages.
Related to the religious symbols library, each with its own dedicated page.
Gerald Holtom's 1958 semaphore-letter design.
Ancient Chinese philosophy behind the swirl.
The Sikh emblem's 1930s design, and the split from Ik Onkar.
The Latin cross of Christianity, and the dagger † and ✕ it's mistaken for.
A shared ancient motif's surprisingly recent path to becoming a Jewish symbol.
Wiccan sacred symbol, and the 1966 origin of its Satanic association.
What its three bars mean: including the slanted footrest bar.
A pre-Abrahamic amulet shared today by Jewish and Islamic tradition.
One sacred sound, three different meanings across Hinduism, Buddhism, and Jainism.
Egypt's hieroglyph for "life": later reshaped by Coptic Christians into a cross.
An Ottoman emblem, not a Quranic one, despite its flag-wide use.
High-volume named symbols that don't share a category with the pages above.
From ASCII divider to Unix "pipe."
Centuries of astronomy, angles, and temperature scales.
The trick behind blank usernames and display names.
Why the infinity symbol replaced the puzzle piece.
The card-suit heart that became love's icon: ♥ vs ❤ vs <3.
What each heart color next to a friend's name means on Snapchat.
The five-pointed star of ratings and favorites, and why it's not an asterisk.
The cool-and-confident emoji's codepoint and its Snapchat Friend Emoji role.
Its codepoint, and the real Apple history behind why it's frozen on July 17.
Tick, done, correct: ✓ ✔ and the ✗ that means the opposite.
The single ℃ ligature vs. plain °C, and why Unicode prefers two characters.
The precomposed ℉ degree sign, and the °F most style guides prefer.
Engineered in 1966 to be "memorable but meaningless."
The 1968 original, and the 2010 "dynamic" redesign debate.
Dated to April 1964, and its creator-disputed "Order" meaning.
Named for the physicist behind V = IR, identical on screen to omega.
Why it's an octagon, and how that's not the same sign as ⛔.
The manga "popping vein" mark that became an emoji wholesale.
An orbital point, not an object, and not the same as asteroid Lilith.
French royalty's emblem, now the Scout crest and the Saints' logo.
Designed by a 23-year-old student for a 1970 Earth Day contest.
The poison-and-pirate mark: not the same character as 💀.
A 2010 Unicode 6.0 original, and how it differs from the studio microphone 🎙️.
Unicode 14.0's face for embarrassment and dread, and the "sarcasm" in its own keyword list.
The Unicode 17.0 face at U+1FAEA: what it means, and the real design history behind it.
U+1FAEF, filed under emotion because it depicts nobody: the cloud is the whole convention.
U+1FACD, and why Unicode shelves an orca beside the dolphins rather than the whales.
U+1FA8A, encoded for the slide, and typed mostly for a punchline that did not land.
U+1FA8E, which Unicode files with the money bag and the gem stone, not with containers.
Pulled out of the Greek letter symbols library for their own dedicated pages.
The letter behind the "sigma male" meme, and why 🗿 outpastes it.
The Greek letter, and the electrical ohm sign that looks identical but isn't.
Coined in 1706, made universal only after Euler adopted it.
The letter that means "change" across math, physics, and finance.
The beginning to Omega's end: plus particles and investment "alpha."
A 1970 gay-liberation symbol, and the letter behind lambda calculus.
Ancient Greek jurors' mark for a death-penalty vote.
The golden ratio's letter, named for the sculptor Phidias.
Schrödinger's quantum wavefunction, and psychology's trident icon.
The X in "Xmas," the Chi-Rho monogram, and the χ² test.
Pulled out of the dash & hyphen library for their own dedicated pages.
Pulled out of the zodiac symbols library for their own dedicated pages.
Castor and Pollux: twins who, myth-wise, weren't actually equal.
Likely the oldest continuously tracked constellation in the zodiac.
The Nemean Lion, and one of only two signs ruled by a luminary.
The only zodiac symbol that's an object, not an animal or person.
The archer whose constellation points straight at the galaxy's core.
The water-bearer that's actually classified as an Air sign.
The golden-fleeced ram behind Jason's own legendary quest.
The only sign ruled by the Moon: Hera's crab from Heracles's Second Labor.
The only zodiac sign personified as a woman.
Its constellation and Orion's are never in the sky at the same time.
The sea-goat: half goat, half fish, born from a half-finished escape.
The only zodiac glyph that ties two creatures together.
Pulled out of the card suit and chess symbol libraries for their own dedicated pages.
Not approved yet: candidates for Emoji 18.0, expected alongside Unicode 18.0 in September 2026. Pulled out of the face emoji, food & drink emoji, weather symbol, animal emoji, and hand symbol libraries for their own dedicated pages.
Won the public vote for Emoji 18.0, and replaced a different proposed emoji mid-draft.
Took over a codepoint slot originally reserved for a deferred Apple Core proposal.
Confirmed for Unicode 18.0, and deliberately simplified so vendors draw it the same way.
Splits off from Comet's years-long rendering split between blue ice and red fireball.
Fixes a cross-platform mix-up between the generic Butterfly and a blue Morpho.
A directional pointing pair, not another approval gesture like Thumbs Up/Down.
A Discord nickname stops at 32 characters, an Instagram bio at 150, a TikTok bio at 80, and X weights some characters as two. The UltraTextGen counter reads all of them at once, and counts a multi-codepoint Unicode emoji the way each platform actually bills it.
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