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pico-

American  
  1. a combining form meaning “one trillionth” (10−12 ).

    picogram.


pico- British  

prefix

  1.  p.  denoting 10 –12

    picofarad

"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

Etymology

Origin of pico-

< Spanish pico peak, beak, bit. See pic 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The magma traveled upward through one of São Jorge Island's major fault systems known as the Pico do Carvão Fault Zone.

From Science Daily • May 14, 2026

Dixon, who represented parts of west and south central L.A., also pushed for the subway to go under Pico Boulevard instead of Wilshire.

From Los Angeles Times • May 7, 2026

Manchester fighter Murphy is unbeaten during the first 18 fights of his career with his last bout in August ending in spectacular fashion as he knocked out Aaron Pico with a spinning elbow.

From BBC • Mar. 19, 2026

They get 20% discounts on their electric bills for subscribing to panels installed on two Extra Space Storage building rooftops in Pico Rivera.

From Los Angeles Times • Mar. 5, 2026

Beyond a range of verdant mountains he sees the snow-covered Pico de Orizaba, the highest summit in Mexico.

From "Enrique's Journey" by Sonia Nazario

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