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 ?
In addition to selecting results based on color harmony and metamerism, the customer can select for non-color factors such as weatherability and cost.
Illuminant metamerism is when two samples having different spectral characteristics match when viewed by a normal observer under a given illuminant, but no longer match when viewed by the same observer using the same illuminating and viewing geometry but with a different illuminant.
Metamerism, Constancy, and Knowing Which, MARK ELI KALDERON
The press-related colour variations and colour shifts related to metamerism (illuminant or observer) are minimized when achromatic component substitution techniques are used.
Developers' efforts are made difficult by metamerism, a property that makes surface colors and metallic effects shift in appearance under different lighting or viewing conditions.
This phenomenon of color variations under different light sources is called metamerism.
Suitable for classroom use, this technical text defines the tristimulus specification, presents the principles of color matching and metamerism in vector-matrix form, and explains the least-square minimization technique for color transformation and several sophisticated methods for spectrum reconstruction.
It has to do with metamerism, which is a phenomenon that occurs when colors change when viewed under different light sources.
3--possible penaeid shrimp, LACMIP Hypotype 6945--antennae very long, curving abdomen exhibiting some metamerism, pleurae vague (Figure 3)
When it comes to reproducing quality digital photos, Epson more than a year ago solved one of the most difficult technical challenges--high-quality black and white images without the effects of metamerism (a greenish effect on black and white photography).
Because standard display technology attempts to match all colors by mixing only red, green, and blue on a CRT or LCD monitor, there can be significant viewer metamerism when the monitor color is compared to real dyed or pigmented samples.
According to the company, the Minimatcher produces five spectrally dissimilar sources of illumination, allowing for visual color assessment, comparison of color variations and the detection of metamerism.