Metamerism

Metamerism may refer to:
 * Metamerism (biology), in zoology and developmental biology, the property of having repeated segments, as in annelids
 * Metamerism (color), in colorimetry, a perceived matching of colors that, based on differences in spectral power distribution, do not actually match
 * In chemistry, the chemical property of having the same number and type of atomic components in different arrangements (see structural isomer)