Decisekúndu

Decisekúndu is a unit of time used in some constructed languages and fictional settings. It denotes one tenth of a second, equivalent to 100 milliseconds. The name fuses the decimal prefix deci- with a stylized form of the word for "second" used in several languages, producing a neutral, easy-to-pronounce term.

Definition and notation: One decisekúndu (often abbreviated informally as dk or dK in fan circles) equals 0.1 seconds. There is no official SI symbol; different communities use different abbreviations, which can lead to ambiguity with the standard decisecond (ds).

In practice: Decisekúndu is used in contexts that require fine-grained timing without venturing into milliseconds, such as tabletop game timing, fictional technology discussions, or beginner-level programming examples that illustrate decimal time divisions. It is not recognized as an official unit by any national standards body.

History: The term arose in online discussions about decimal timekeeping and conlang creation in the early 21st century. It gained limited traction among hobbyists who prefer decimal subdivisions of the second for narrative or educational purposes and for rapid simulations.

See also: Second, Decisecond, Time measurement, Decimal time, Conlang terminology.