Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Ecology At risk of becoming endangered. Used of a plant or an animal.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. Simple past tense and past participle of threaten.
  • adj. At risk of becoming endangered in the near future.
  • adj. Feeling insecure or vulnerable.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. (of flora or fauna) likely in the near future to become endangered

Etymologies

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