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noun Uncommon

mammal

MA-muhl

Mammal (noun) means a warm-blooded vertebrate animal with hair or fur that feeds its young with milk. Example: “Whales are mammals even though they live in the ocean.”

noun
1
A warm-blooded vertebrate animal with hair or fur that feeds its young with milk.
"Whales are mammals even though they live in the ocean."
"Humans, dogs, and elephants are all mammals."

How to use mammal

Learner’s notes

In plain EnglishAny animal that has fur, is warm-blooded, and nurses its young with milk.

Memory tip

A good memory hook: "mammal" and "mammary gland" share the same Latin root, mamma, meaning breast.

Trace the full origin ↓

Word forms

mammals plural

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Test yourself on “mammal” A quick quiz — meaning, synonyms & usage

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Whales are _____ even though they live in the ocean.

Etymology

From Modern Latin Mammalia, coined in 1758 by Linnaeus, from Latin mamma ("breast").

Origin: Latin · First attested 1758

Class of 1758 mammal joined the language around 1758.
See the full Class of 1758 →

Related words

Frequently asked questions

What does “mammal” mean?

The word “mammal” means a warm-blooded vertebrate animal with hair or fur that feeds its young with milk. In plain terms, any animal that has fur, is warm-blooded, and nurses its young with milk.

How do you pronounce “mammal”?

“Mammal” is pronounced MA-muhl (/ˈmæməl/ in IPA).

How do you use “mammal” in a sentence?

Here is “mammal” used in a sentence: “Whales are mammals even though they live in the ocean.”

What is another word for “mammal”?

Words with a similar meaning to “mammal” include mammalian.

What part of speech is “mammal”?

“Mammal” is a noun.

Where does the word “mammal” come from?

The word “mammal” dates back to around 1758 and comes from Latin. From Modern Latin Mammalia, coined in 1758 by Linnaeus, from Latin mamma ("breast").

Is “mammal” a common word?

“Mammal” is an uncommon word in modern English.

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Definitions: FreeDict original editorial