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𐆊

greek zero sign

Greek Zero Sign

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𐆊 is a zero sign in Greek astronomical writing. It marks an empty base-60 place or no whole units before a fraction, especially in calculations of angles and time. Its history links a Babylonian separator to later Arabic astronomical notation.

Text symbol

What 𐆊 means

A zero sign for Greek astronomical calculations in base 60.

Base 60 means each place is 60 times the one before; the system is also called sexagesimal notation.

Ancient documents written on papyrus often show a small circle with a stroke above it, though scribes varied the form. A proposed origin favors a Babylonian separator used in base-60 numbers over the Greek word οὐδέν (“nothing”). Later Arabic astronomical manuscripts use a zero form based on the Greek papyrus sign.

A specialist sign for historical Greek astronomy.

Use it in historical base-60 notation, not ordinary numbers.

Part of the collection

Who writes 𐆊

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Don't confuse it with

1

Questions people ask

1

Why does 𐆊 show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

How to type or find 𐆊

Search it as
Greek zero · sexagesimal zero · astronomical zero
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 1018A, then AltX to get 𐆊.
Windows
⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).
macOS
⌃Control+⌘Command+␣SpaceOpen the character viewer and search “greek zero sign”.
Linux
⎈Ctrl+⇧Shift+UType 1018a, then Enter or Space.
HTML
𐆊
CSS
\1018A
Codes and encoding1 code points
HTML decimal
𐆊
HTML hex
𐆊
CSS content
content: "\1018A";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%90%86%8A
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

1

Maths & numbers1,835 symbols