What does chromatophore mean?
A chromatophore is a specialised, pigment-containing biological cell found chiefly in the skin of animals such as fish, amphibians, reptiles, and cephalopods. Chromatophores hold pigments within small granules or sacs, and in many species they are capable of changing an animal's colour by altering the spread of those pigments within the cell. In cephalopods like octopuses, squids, and cuttlefish, chromatophores are under direct neural control, allowing near-instantaneous shifts between colours for camouflage, communication, and hunting. In cold-blooded vertebrates, changes tend to be slower and driven partly by hormones. The term derives from Greek roots meaning 'colour' and 'to carry', reflecting its role as a bearer of pigment. Because chromatophores sit at the intersection of physiology, behaviour, and ecology, the word appears most often in scientific contexts — marine biology, comparative anatomy, and biotechnology-inspired research into adaptive materials — rather than in everyday speech. Its precise, technical character makes it valuable wherever colour change in living organisms must be described accurately.
nounA pigment-containing cell in the skin or other tissue of an animal, especially one in fish, amphibians, reptiles, and cephalopods that can change size or distribution to alter the animal's colour.
- A pigment-containing and often colour-changing cell found in the skin or organs of many animals, notably fish, amphibians, reptiles, and cephalopods.
"Cuttlefish can match their surroundings almost instantly because their chromatophores expand and contract under direct neural control."
"The chameleon's chromatophores shift to display vivid greens and oranges as it moves through the foliage."
"Under the microscope, the squid's chromatophores appeared as dense clusters of red, yellow, and brown pigment granules."
Standard English plural, formed by adding -s. The word is typically used in the plural when describing populations of pigment cells across a region of skin.
"The octopus's skin contains thousands of chromatophores, each independently controlled by motor neurons."
An octopus's skin is dotted with millions of chromatophores — tiny sacs of pigment it opens and closes like pixels, letting it repaint its entire body in a fraction of a second.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chromatophore
The word 'chromatophore' combines the Greek roots 'chroma' (χρῶμα), meaning colour or pigment, and '-phore', from 'pherein', meaning to bear or carry. It entered English scientific vocabulary during the nineteenth century, when biologists were formalising terminology for cells observed under improving microscopes. It shares its roots with related terms such as 'chromosome' and 'chromatic' on one side, and with '-phore' compounds like 'photophore' on the other, all reflecting the same classical pattern for naming light- and colour-related structures.
How chromatophore is actually used
Strictly a technical term used in zoology, physiology, and marine biology; it rarely appears outside scientific writing. In cephalopod biology, 'chromatophore' specifically refers to the neurally controlled pigment organs responsible for rapid camouflage and signalling.
Easily confused with chromatophore
Chloroplasts are photosynthetic organelles in plant cells, whereas chromatophores are pigment-bearing cells (or, in bacteria, pigment-bearing membranes) involved in colouration rather than photosynthesis.