Definition of subumbrella in English:
subumbrella
noun sʌbʌmˈbrɛləˌsəbəmˈbrelə
Zoology The concave inner surface of the umbrella of a jellyfish or other medusa.
Example sentencesExamples
- Hydromedusae swim by rhythmically contracting the circular swimming muscles located in the subumbrella.
- These rhopalial ganglia presumably sort this information and then distribute it to the appropriate effectors, the swim musculature, via the distributed nerve net of the subumbrella.
- From the center of the subumbrella hangs the manubrium, which terminates with a mouth opening.
- The base of the manubrium appears as a dark square in the center of the subumbrella.
Derivatives
adjective
Zoology Yet another hypothesis for the origin of the mesoderm from the subumbrellar epithelium of a hydrozoan medusa buds has been recently advanced.
Example sentencesExamples
- The nervous system can be divided into three functional parts: the sensory clubs or rhopalia, the conducting nerve ring, and the motor nerve net underlying the subumbrellar epithelium.
- Ding further described Sanxiamedusa and Maopingimedusa from Doushantuo black shales at Miaohe and interpreted them as medusae based on claimed subumbrellar radial canals and tentacles.