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pico-

 - 5 dictionary results

pico-

 
Use pico- in a Sentence
a combining form meaning “one trillionth” (10− 1 2): picogram.
Origin:
< Sp pico peak, beak, bit. See pic 2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pico-  
pref.  

  1. One-trillionth (10-12): picosecond.

  2. Very small: picornavirus.


[Spanish pico, beak, small quantity, from Latin beccus, beak, of Celtic origin (influenced by Spanish picar, to prick).]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

pico- 
1915, adopted c.1952 as a scientific prefix meaning "one trillionth," from Sp. pico "a little over, a small balance," lit. "sharp point, beak," of Celtic origin (cf. Gaul. beccus "beak"). Picosecond first recorded 1966.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

pico- pref.

  1. One-trillionth (10-12): picogram.

  2. Very small: picornavirus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Computing Dictionary

pico-
prefix

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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