- an active volcano in N California, in the S Cascade Range. 10,465 feet (3190 meters).
Also called Mount Lassen.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a volcano in S California, in the S Cascade Range. An area of 416 sq km (161 sq miles) was established as Lassen Volcanic National Park in 1916. Height: 3187 m (10 457 ft)