Definition of warning coloration in English:

warning coloration

noun

Zoology
  • Conspicuous coloring that warns a predator that an animal is unpalatable or poisonous.

    • ‘Aposematic coloration (conspicuous advertisement of a prey's unpleasant qualities) or warning coloration is found in a wide array of animals.’
    • ‘Pyrazines are extremely volatile compounds and occur alongside warning coloration in insects from widely differing taxonomic groups.’
    • ‘All salamandrids have toxic skin secretions (some produce tetrodotoxins), and many have bright warning coloration that is used in defensive displays.’