| 释义 |
Definition of pennate in English: pennateadjective ˈpɛnətˈpɛneɪt Botany (of a diatom) bilaterally symmetrical. Compare with centric Example sentencesExamples - At the shallow south end of the lake, most of the samples were relatively similar, dominated by pennate forms.
- Both articulated and broken pennate diatoms, up to 12 m long and 4 m wide, are scattered throughout the stromatolitic sinters.
- Diatoms are photosynthetic protists, which are classified into centric and pennate diatoms, according to whether they have a radial or bilateral symmetry.
- Tissue-level concentrations of hydrophilic and lipophilic extracts caused high levels of mortality in a sympatric pennate diatom.
- The major source of the spring diatom pulse was Skeletonema potamos and a variety of centric and pennate diatoms.
Origin Mid 19th century: from Latin pennatus 'feathered, winged', from penna 'feather'. Definition of pennate in US English: pennateadjectiveˈpenātˈpɛneɪt Botany (of a diatom) bilaterally symmetrical. Compare with centric Example sentencesExamples - Tissue-level concentrations of hydrophilic and lipophilic extracts caused high levels of mortality in a sympatric pennate diatom.
- At the shallow south end of the lake, most of the samples were relatively similar, dominated by pennate forms.
- The major source of the spring diatom pulse was Skeletonema potamos and a variety of centric and pennate diatoms.
- Diatoms are photosynthetic protists, which are classified into centric and pennate diatoms, according to whether they have a radial or bilateral symmetry.
- Both articulated and broken pennate diatoms, up to 12 m long and 4 m wide, are scattered throughout the stromatolitic sinters.
Origin Mid 19th century: from Latin pennatus ‘feathered, winged’, from penna ‘feather’. |