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.

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

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

Its largest competitor, Amazon.com, recently opened a hub of seven data center buildings as part of its Project Rainier.

From The Wall Street Journal • Nov. 12, 2025

AI start-up Anthropic is utilizing Project Rainier for its Claude AI model and is projected to use over one million Trainium 2 chips by year-end.

From Barron's • Oct. 29, 2025

Rainier National Park, it said in bold, capital letters.

From "The Honest Truth" by Dan Gemeinhart

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