Header image of wall of bricks Open menu Close menu


In units of measurement, a factor of 10-12.

Spanish pico, a little bit.

This is one of the standard SI (Système International) multiples (see the entryNumber words). An example is picosecond, a millionth of a millionth of a second; others are picogram, picofarad, and picocurie. A rare example in the looser sense of ‘extremely small’ occurs in picocell, a very small area of coverage in a wireless communication system, perhaps only a single room within a building.

Copyright © Michael Quinion 2008–. All rights reserved. Your comments are very welcome.