biodiversity

noun

: biological diversity in an environment as indicated by numbers of different species of plants and animals

Did you know?

Biodiversity may become the rallying call for the next decade, wrote David Wake in the journal Science in 1989. Indeed, biodiversity is a word you're likely to encounter in writing about ecology and the environment today. But when Wake used it, "biodiversity" was still a relatively new addition to the English language, having first appeared in writing in the mid-1980s. Of course, the roots of biodiversity are much older. It evolved from a commingling of the descendants of the Greek noun bios, which means "mode of life," and the Latin verb divertere, which means "to turn aside" or "to go different ways."

Examples of biodiversity in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That includes September’s Aloha Festivals celebrating Hawaiian traditions and the annual Kāhuli Festival at the Bishop Museum in October, a unique family-friendly event spotlighting the vital role of Hawaiian land snails in preserving biodiversity. Beth Luberecki, USA Today, 31 Aug. 2026 Imports and Transplants What do Americans do with all of this mail-order biodiversity? John Werner, Forbes.com, 30 Aug. 2026 The archipelago was declared a National Heritage of Humanity in 1979 by UNESCO given its great biodiversity. ABC News, 29 Aug. 2026 To protect the bees, no pesticides are used on the property, and the project helps support native populations, which encourages the biodiversity of endemic plant life. Condé Nast, Condé Nast Traveler, 28 Aug. 2026 See All Example Sentences for biodiversity

Word History

Etymology

bio- + diversity

First Known Use

1985, in the meaning defined above

Time Traveler
The first known use of biodiversity was in 1985

Browse Nearby Words

Podcast

Cite this Entry

“Biodiversity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biodiversity. Accessed 4 Sep. 2026.

Kids Definition

biodiversity

noun
bio·​di·​ver·​si·​ty -də-ˈvər-sət-ē How to pronounce biodiversity (audio)
-dī-
: biological variety in an environment as indicated by numbers of different species of plants and animals
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster