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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

Some 900 porters were hired to carry supplies—including food, scientific instruments, oxygen bottles and Rainier beer.

From The Wall Street Journal • Apr. 15, 2026

Amazon is already the primary cloud provider for Anthropic, backing the startup with an $8 billion investment and building Project Rainier specifically to train its models.

From MarketWatch • Dec. 30, 2025

It has said it expects to be using more than one million Trainium 2 chips by the end of the year, including its use of the Project Rainier supercomputer with nearly 500,000 Trainium processors.

From Barron's • Dec. 2, 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