metamers

/ˈmɛtəˌmɜrz/
noun
  1. Repeated segments or parts that make up the body of an animal, such as the rings of a worm or the sections of an insect.
    • Scientists counted the metamers of the caterpillar to determine its species.
    • Each of the metamers in a lobster's tail contains a pair of legs.
    • The earthworm's body is composed of many similar metamers lined up from head to tail.
  2. In color science, different combinations of light wavelengths that appear the same color to the human eye.
    • The designer avoided using metamers in the logo to ensure consistent color across all lighting.
    • Metamers are important in printing because they help match colors on different materials.
    • Two paints can be metamers, looking identical under sunlight but different under fluorescent light.
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