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pico-

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a combining form meaning “one trillionth” (10−12): picogram.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of pico-

<Spanish pico peak, beak, bit. See pic2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for pico-

pico-

prefix

denoting 10 –12picofarad Symbol: p
from Spanish pico small quantity, odd number, peak
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for pico-

pico-

pref.

One-trillionth (10-12):picogram.
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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