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).

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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)

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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

"Robot wars are already happening," says Oleksandr Afanasiev from the Ukrainian army's K2 brigade.

From BBC • Mar. 6, 2026

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

From Science Daily • Feb. 12, 2026

Other local recipients of SBA funding 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 • Jan. 19, 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

This setback had not put a damper on his Himalayan career, however: he’d gone on to climb K2, Lhotse, Cho Oyu, Ama Dablam, and, in 1993, Everest without supplementary oxygen.

From "Into Thin Air" by Jon Krakauer