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The SI prefix for a thousand units is "kilo-", abbreviated to "k"—for instance, a kilogram or "kg" is a thousand grams. This is sometimes extended to non-SI contexts, such as "ka" ( kiloannum ) being used as a shorthand for periods of 1000 years.
This informal postfix is read or spoken as "thousand", "grand", or just "k". The financial and general news media mostly use m or M, b or B, and t or T as abbreviations for million, billion (10 9 ) and trillion (10 12 ), respectively, for large quantities, typically currency [ 28 ] and population.
Kilo is a decimal unit prefix in the metric system denoting multiplication by one thousand (10 3). It is used in the International System of Units , where it has the symbol k , in lowercase . The prefix kilo is derived from the Greek word χίλιοι ( chilioi ), meaning "thousand".
Most abbreviations can be found in the Chambers Dictionary as this is the dictionary primarily used by crossword ... (Roman numeral for 1000), K (kilo-) Grand prix ...
In the International System of Units (SI), the SI prefix for one thousand is kilo-, officially abbreviated as k: for example, prefixed to metre/meter or its abbreviation m, kilometre or km signifies a thousand metres.
The prefix geop and term "geopbyte" have been used in the information technology industry to refer to 10 30 bytes, following "brontobyte". [14] The ascending prefixes peta (1000 5) and exa (1000 6) are based on the Greek-derived numeric prefixes "penta" (5) and "hexa" (6).
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The abbreviation kyr means "thousand years". kyr was formerly common in some English language works, especially in geology and astronomy, for the unit of 1,000 years or millennium. The "k" is the unit prefix for kilo-or thousand with the suffix "yr" simply an abbreviation for "year".