Definition of countershaded in English:

countershaded

adjective

Zoology
  • See countershading

    • ‘This strongly suggests that for these birds at this point in the experiment, countershaded baits really were least readily detected when placed against a color-matching substrate.’
    • ‘Most siganids are countershaded, but some reef species, Siganus vulpinus, have coloration similar to butterflyfishes.’
    • ‘It also explains why the coloration of deep-sea species is essentially uniform rather than countershaded, since bioluminescent searchlights may strike the animal from any angle.’
    • ‘Comparisons across all countershaded artiodactyls similarly revealed an association with desert-dwelling.’