释义 |
Definition of tagma in English: tagmanounPlural tagmata ˈtaɡməˈtæɡmə Zoology (in the bodies of arthropods and some other segmented animals) a morphologically distinct region, typically comprising several adjoining segments, such as the head, thorax, and abdomen of insects. Example sentencesExamples - Ventral appendages suggest a different pattern of tagmosis, especially if tagmata are defined as zones of functional specialization, as is commonly the case when considering arthropod appendages.
- The distinct adult thorax and pygidia evident in some trilobites probably do deserve recognition as separate tagmata, but this may not be the case among all trilobites.
- The chelicerate body plan is characterized by two tagmata, the prosoma, including head structures, and the opisthosoma.
- All hexapods have a body divided into three basic tagmata - head, thorax, and abdomen - and three pairs of thoracic legs.
- As defined by Collins, Dinocarids are bilaterally symmetrical arthropods with a body divided into two principal tagmata, recalling the prosoma and opisthosoma of chelicerates, and a non-mineralised cuticle.
Origin Early 20th century: from Greek, literally 'something arranged', from tassein 'set in order'. Definition of tagma in US English: tagmanounˈtaɡməˈtæɡmə Zoology (in the bodies of arthropods and some other segmented animals) a morphologically distinct region, typically comprising several adjoining segments, such as the head, thorax, and abdomen of insects. Example sentencesExamples - Ventral appendages suggest a different pattern of tagmosis, especially if tagmata are defined as zones of functional specialization, as is commonly the case when considering arthropod appendages.
- The chelicerate body plan is characterized by two tagmata, the prosoma, including head structures, and the opisthosoma.
- All hexapods have a body divided into three basic tagmata - head, thorax, and abdomen - and three pairs of thoracic legs.
- The distinct adult thorax and pygidia evident in some trilobites probably do deserve recognition as separate tagmata, but this may not be the case among all trilobites.
- As defined by Collins, Dinocarids are bilaterally symmetrical arthropods with a body divided into two principal tagmata, recalling the prosoma and opisthosoma of chelicerates, and a non-mineralised cuticle.
Origin Early 20th century: from Greek, literally ‘something arranged’, from tassein ‘set in order’. |