Two dots explained

The term two dots or double dot may refer to:

Orthography

Colon (punctuation), the punctuation mark
Two dots (diacritic), a mark used with a base letter to indicate that its pronunciation is somehow modified
- Diaeresis (diacritic), the diacritic mark used to denote the separation of two consecutive vowels
- Umlaut (diacritic), the diacritic mark to indicate the vowel-fronting sound change
  - Metal umlaut, gratuitous diacritic used in the names of some rock bands
Ethiopic wordspace, a word divider in Geʽez script
In old Turkic script, a colon-like symbol is sometimes used as a word separator
, two vertical dots used to indicate a question in fifth century Syriac manuscripts
Two dot punctuation mark, used as an obelism

Two Dots (game), a puzzle game for Android and IOS
Leader (typography) Row of dots used in tables of contents (usually more than two)
Ellipsis (computer programming), a notation (two or three dots) is used to denote programming ranges, an unspecified number of arguments
A parent directory in a relative path
A second derivative in Newton's notation