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Synonyms

mammals

Cultural  

  1. A class of vertebrates characterized by the production of milk by the females and in most cases, by a hairy body covering. Most mammals give live birth to their young. Human beings are mammals.

Example Sentences

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One key factor may be the Marine Mammal Protection Act of 1972, which helped populations of seals, sea lions, orcas, and other marine mammals recover after years of decline.

From Science Daily • Apr. 1, 2026

Concentrations of beryllium, copper, chromium, nickel and lead in particular were significantly above established safety thresholds for marine life, prompting fears for the long-term health of fish, marine mammals and the marine food chain.

From Los Angeles Times • Mar. 20, 2026

A survey from 2020 said there were just over 10,000 of the huge mammals in existence.

From BBC • Mar. 18, 2026

The region hosts the world's second-largest population of dugongs -- herbivorous marine mammals known as "sea cows" that are listed as vulnerable -- with an estimated 5,000 to 7,500 individuals.

From Barron's • Mar. 17, 2026

For those extinct American mammals whose bones are available in greatest abundance and have been dated especially accurately, one can pinpoint the extinctions as having occurred around 11,000 B.C.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.