Definition of metachrosis in English:

metachrosis

noun

mass nounZoology
  • The ability of chameleons and some other animals to change colour.

    • ‘Melanophore cells are the main controls for metachrosis.’
    • ‘Our data also emphasize the dual neural and endocrine character of metachrosis in the Ambystoma larva.’
    • ‘Color changing or metachromatism or metachrosis is common in chordates and in vertebrates such as fish, amphibians and in some types of lizards.’
    • ‘Some desert reptiles, particularly lizards, are capable of varying degrees of color change (metachrosis) from darker to lighter shades, aiding both in thermoregulation and background matching.’
    • ‘This species has shown a limited ability to change colour (metachrosis) due to changes in the distribution of black pigment in melanophore cells.’

Origin

Late 19th century: modern Latin, from meta- (denoting a change of condition) + Greek khrōsis ‘colouring’.

Pronunciation

metachrosis

/ˌmɛtəˈkrəʊsɪs/