Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

pico-

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 entry Words for multiples). 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.

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