Myomorpha
Noun A suborder of rodents comprising the "mouse-like" rodents. This group includes true rats, mice, hamsters, voles, lemmings, and gerbils. They are characterized by specific jaw and skull musculature that gives them powerful chewing abilities.
The term is used in scientific, biological, and zoological contexts to classify a major group of rodents. * The order Rodentia is divided into several suborders, including Myomorpha, Sciuromorpha, and Hystricomorpha. * Researchers study the evolutionary history of Myomorpha to understand rodent diversification.
- Taxonomic Context: In modern taxonomy, the traditional suborder "Myomorpha" is sometimes revised or subdivided based on genetic data, but the term remains widely used to describe this morphologically defined group.
- Morphological Definition: The defining characteristic is the unique arrangement of jaw muscles (masseter muscles), particularly the lateral masseter muscle, which extends through a large infraorbital foramen.
- Myomorph (noun): An individual rodent belonging to the suborder Myomorpha.
- The common house mouse is a typical myomorph.
- Myomorphic (adjective): Relating to or characteristic of the suborder Myomorpha.
- The fossil exhibited clear myomorphic jaw features.
- Muroid rodents (in a broad, informal sense, though "Muroidea" is technically a superfamily within Myomorpha).
This word has a single, specific scientific meaning. It is not used in general English and has no idiomatic or phrasal verb applications.
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true rats and mice and related rodents
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