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Rainier

American

[ruh-neer, rey-, rey-neer] / rəˈnɪər, reɪ-, ˈreɪ nɪər /

noun

Mount, a volcanic peak in W Washington, in the Cascade Range. 14,408 feet (4,392 meters).

Rainier British

/ ˈreɪnɪə, rə-, reɪˈnɪə /

noun

a mountain in W Washington State: the highest mountain in the state and in the Cascade Range. Height: 4392 m (14 410 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

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.

In 2024, with their son Sam, the Ballmers launched Rainier Climate, a nonprofit aimed at cutting greenhouse gas emissions.

From The Wall Street Journal • Apr. 18, 2026

Amazon’s cloud business did score wins this year: it brought its data-center initiative Project Rainier online, secured a $38 billion deal with OpenAI and released its latest Trainium3 custom chip.

From MarketWatch • Dec. 30, 2025

“Project Rainier was built exclusively for Anthropic, but we believe AWS could replicate the architecture for Trn3 to serve other large customers if it can gain adequate access to power,” J.P.

From Barron's • Dec. 2, 2025

Records show Booker took part in at least two other strongwoman competitions this year - winning the Rainier Classic in June and finishing second at North America's Strongest Woman in July.

From BBC • Nov. 26, 2025

And it wasn’t as tall as Mount Rainier, which loomed over Seattle, about two hundred miles to the north of Cedar.

From "I Survived the Eruption of Mount St. Helens, 1980" by Lauren Tarshis

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023