Definition

Noun: - A large, nocturnal, burrowing rodent found in the uplands of the Pacific coast of North America; considered the most primitive living rodent species. This animal, also known as the Aplodontia rufa, is not a true beaver but is named for its similar burrowing and gnawing habits.

Usage

• The term is used as a singular, countable noun to refer to the specific animal.
• It is primarily used in biological, zoological, or natural history contexts.
• Example:

Examples

Advanced Usage

• The term can be used in scientific classification to discuss primitive rodent lineages.
• Example:

Variants and Related Words

• Aplodontia (n): The genus name for the mountain beaver.
• Sewellel (n): A historical name for the mountain beaver, derived from a Chinook Jargon word.
• Boomer (n, regional): A colloquial name used in some parts of the Pacific Northwest.

Synonyms

• Aplodontia rufa (n): The scientific binomial name.
• Primitive rodent (n): A descriptive term highlighting its evolutionary status.

Notes on Meaning

• It is critical to distinguish the "mountain beaver" from the true beaver (genus ). They are different species with different behaviors and ecological roles.
• The "mountain" in its name refers to its upland habitat, not its size relative to other beavers.

Noun

1. bulky nocturnal burrowing rodent of uplands of the Pacific coast of North America; the most primitive living rodent