What т means
т is Cyrillic. If you are writing a Cyrillic word, Latin t or T inserts a different character, even where the shapes look alike.
The letter descends from Greek tau, a letter for the t sound. Early Cyrillic appears in 10th-century Old Church Slavonic manuscripts: handwritten Christian texts in an early Slavic literary language. There the letter was named tverdo, meaning “firmly”.
Don't confuse it with
2Questions people ask
1Why does т 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 т
Windows (Word)
Alt+XType 0442, then Alt+X to get т.
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 “cyrillic small letter te”.
Linux
Ctrl+Shift+UType 0442, then Enter or Space.
HTML
тCSS
\0442Cyrillic keyboard
Select the layout for the language you are writing, then use its key for Т/т.
Linux (GNOME)
In apps that support GNOME Unicode input, press Ctrl+Shift+U, type 0442, then press Space.
Codes and encoding1 code points
HTML decimal
т
HTML hex
т
CSS content
content: "\0442";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%D1%82
1
On screen
1
Code points
1
JS .length
2
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.