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Pico

 Origin

pico-

 
a combining form meaning “one trillionth” (10−12): picogram.
Origin:
< Spanish pico peak, beak, bit. See pic2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pico is always a great word to know.
So is lollapalooza. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a scrap or morsel of food left at a meal.
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Etymonline
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, © 2010 Douglas Harper
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American Heritage
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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American Heritage
Abbreviations & Acronyms
PICO
Polio Information Center Online
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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