- a Greek combining form meaning “thousand,” introduced from French in the nomenclature of the metric system (kiloliter); on this model, used in the formation of compound words in other scientific measurements (kilowatt).
- denoting 10³ (1000)kilometre Symbol: k
- (in computer technology) denoting 2 10 (1024): kilobyte: in computer usage, kilo- is restricted to sizes of storage (e.g. kilobit) when it means 1024; in other computer contexts it retains its usual meaning of 1000
word-forming element meaning “one thousand,” introduced in French 1795, when the metric system was officially adopted there, from Greek khilioi “thousand,” of unknown origin.
- One thousand (103):kilogram.
- A prefix that means:
- One thousand, as in kilowatt, one thousand watts.
- 210 (that is, 1,024), which is the power of 2 closest to 1,000, as in kilobyte.