pico- [PEE koh] (Italian: very small or from Spanish, "beak, tip, very small"; and from Latin, beccus, beak; also, a decimal prefix used in the international metric system for measurements).This prefix is used in metric [decimal] system as trillionth [U.S.] and billionth part [U.K.], 10-12 [0.000 000 000 001]. The metric symbol for pico- is p.picoammeter:
picoampere:
picocurie:
picofarad:
picogram:
picolife:
picoliter:
picometer:
picomole:
piconavirus:
picopicogram:
picoplankton:
picoplanktonic:
Picornaviridae:
picosecond:
picounit:
picowatt:
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