Metameric is a word that refers to the characteristic of having repeating segments or units, like the segments of a worm or the vertebrae of an animal's spine. The word is pronounced /mɛtəˈmɛrɪk/, with the stress on the second syllable. The spelling of this word is based on its Greek roots, with "meta-" meaning "alongside" or "following" and "meros" meaning "part" or "portion". The "-ic" ending indicates that the word is an adjective.
Metameric is an adjective that typically refers to a specific characteristic or property of an organism or structure that is divided into repeating segments or units. Derived from the word "metamerism," which describes the phenomenon of segmentation, metameric is often used in the field of biology.
Metameric structures are commonly found in various organisms, such as annelids, arthropods, and chordates. These structures are composed of repeating, similar segments or units that form a linear arrangement along the length of the organism or structure. Each segment typically exhibits a high degree of structural similarity, often performing similar functions.
The concept of metameric segmentation is crucial for the development and organization of many organisms. It allows for the differentiation and specialization of segments, enabling the organism to adapt to its environment or perform specialized tasks more efficiently. Additionally, metameric segmentation often provides flexibility, allowing the organism to move or respond to stimuli with precision.
The term metameric can also be used more broadly to describe objects or systems that exhibit a similar principle of division into repeated patterns or units. For instance, in certain branches of design and architecture, metameric patterns or structures can be observed in the arrangement of tiles, bricks, or other building materials.
In summary, metameric refers to the characteristic of being segmented or divided into repeated units, often observed in organisms or structures. This organization allows for specialization, adaptability, and precise movements in certain organisms, and can also be seen in other fields where repeated patterns or units are present.
1. Noting isomeric substances having the same percentage composition and the same molecular weight, but differing in chemical constitution. 2. Relating to a metamere or segment of the body.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Having different characters and properties, but the same ultimate elements and atomic weight with another body.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "metameric" is derived from the Greek word "metamēros", which is a combination of "meta" meaning "beyond" or "change" and "mēros" meaning "part" or "segment". Therefore, "metameric" refers to something that is composed of or characterized by segments or parts that have undergone a change or transformation.