metamerism


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me·tam·er·ism

(me-tam'ĕr-izm),
1. A type of anatomic structure exhibiting serially homologous metameres; in primitive forms, such as the annelids, the metameres are almost alike in structure; in vertebrates, specialization in the cephalic region masks the underlying metamerism, which is still clearly evident in serially repeated vertebrae, ribs, intercostal muscles, and spinal nerves, and in young vertebrate embryos.
2. In chemistry, rarely used synonym for structural isomerism.

metamerism

(mĭ-tăm′ə-rĭz′əm)
n.
The condition of having the body divided into metameres, apparent in certain animals only in the early embryonic stages of development.

me·tam·er·ism

(me-tam'ĕr-izm)
A pattern of anatomic structure exhibiting serial repetition of homologous structures, as vertebrae, ribs, intercostal muscles, and spinal nerves.

metamerism

a system of structures in which similar segments succeed each other craniocaudally.
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References in periodicals archive ?
Observer metamerism is when two samples having different spectral characteristics match when viewed by one observer, but do not match when viewed by a different observer under the same conditions.
For products that will encounter a variety of potential light sources, it is important to rule out metamerism during pigment selection early in the formulation process.
Thanks to a precise combination of pigments and dyes that display a geometric metamerism, chroma-shift parts change color, displaying what is commonly referred to as color travel or the chameleon effect.
Metamerism, heterochrony, and inflorescence morphology of the Pithecellobium complex (Leguminosae: Mimosoideae: Ingeae).
It's metamerism, a color match between two materials in which colors are identical under some lighting conditions but not under others.
It may well be that after, say, the invention of multicellularity, or the invention of metamerism, evolution was never the same again.
This system helps improve color reproduction, tonal gradations and black density while reducing graininess and metamerism.
The new processing engine, L-COA PRO, controls the balance of inks and the precise placement of ink droplets, carefully calculating best results for each print mode and media using various factors including color reproduction, tonal gradations, black density, graininess, glossiness, anti-bronzing and elimination of metamerism, all of which contribute to creating an amazing printed image.
3) It is one among the chief manifestation of body segmentation or metamerism.
This ensures total accuracy of colour and prevents incorrect colour production, colour drift, metamerism and batch-to-batch variation.
They can also evaluate metamerism (a pair of specimens match under one set of illuminant and observer conditions, but mismatch under another set of conditions).
However, repeatability may be poor due to aging of filters, and object metamerism can be a challenge to their accuracy.