pico-

Free On-line Dictionary of Computing

1.<unit> An SI prefix used to multiply the value of an SI (Système International) unit by some power of ten.

2.<programming, mathematics> In mathematics or programming, a prefix operator is one that is written before its operand. In a programming language using prefix notation, all operators are prefix operators.

(2014-07-08)

The Jargon File

[SI: a quantifier meaning × 10^-12] Smaller than nano-; used in the same rather loose connotative way as nano- and micro-. This usage is not yet common in the way nano- and micro- are, but should be instantly recognizable to any hacker. See also quantifiers, micro-.