noun[mass noun] Zoology
The ability of chameleons and some other animals to change colour.
- 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.
- Melanophore cells are the main controls for metachrosis.
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