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K2

American  
[key-too] / ˈkeɪˈtu /

noun

  1. Also called Dapsang.  Also called Godwin Austen.  a mountain in N Kashmir: highest peak in the Karakoram range and second highest in the world. 28,250 feet (8,611 meters).


Trademark.
  1. a brand name for a synthetic cannabis compound.

K2 British  

noun

  1. Also called: Godwin-Austen.   Dapsang.  a mountain in the Karakoram Range on the Kashmir-Xinjiang border: the second highest mountain in the world. Height: 8611 m (28 250 ft)

"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 K2

First recorded in 1855-60 K2 for def. 1; 2010 K2 for def. 2; K(arakoram) ( def. 1 ) + 2 (because it was the second peak in the range to be measured)

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.

Local SBA funding recipients include Costa Mesa autonomous weapons maker Anduril Industries, now valued at more than $30 billion, and satellite platform manufacturers K2 Space in Torrance and Apex Space in Los Angeles.

From Los Angeles Times • Mar. 18, 2026

AI stands apart from previous tech advances because its applications are so broad and many potential uses have yet to be discovered, says Tom Rodenhauser, managing partner of K2 Consulting Research, which tracks the industry.

From The Wall Street Journal • Mar. 9, 2026

In this case, scientists observed only a single "transit" during Kepler's extended K2 mission.

From Science Daily • Feb. 12, 2026

Agent friendly -- and open-source -- models, like the latest version of the Kimi K2 model from the startup Moonshot AI, released in November, are widely considered the next frontier in the generative AI revolution.

From Barron's • Dec. 22, 2025

He first met Fischer and Hall on the slopes of K2 in 1992, where his competence and easygoing demeanor left a favorable impression on both men.

From "Into Thin Air" by Jon Krakauer