IUCN Red List

American

[ahy-yoo-see-en red list] / ˈaɪˈjuˈsiˈɛn ˈrɛd ˌlɪst /

noun

an inventory of the conservation status of plant and animal species throughout the world, as directed and compiled by the International Union for Conservation of Nature: recognized as the world’s most comprehensive and authoritative assessment of species extinction risk.

First recorded in 1960–65

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