Definition of radula in English:

radula

nounPlural radulae ˈradjʊləˈrædʒələ

Zoology

(in a mollusc) a structure of tiny teeth used for scraping food particles off a surface and drawing them into the mouth.
〔动〕（软体动物的）齿板，齿舌
Example sentencesExamples
- In some chitons, the radula has teeth tipped with magnetite, which hardens them.
- Threadlike cilia-bearing tentacles probe for food, such as forams, detritus, and even the occasional buried bivalve, and bring it to the mouth where a large radula grinds it up.
- Once the prey is snared it is bitten with strong beak-like jaws and pulled into the mouth by the radula.
- Most mollusks use the radula to break up food, but the cone snail uses it to inject venom.
- The correct characterization of fossil taxa is difficult as specimens are missing many important features necessary for an accurate identification, particularly protoconchs and radulae.

Derivatives

radular

adjective

Zoology

It is significant that a minority of ammonites and incirrate octopods have radular teeth of this type, or exhibit much size dimorphism.
Example sentencesExamples
- Major interneurons fire cyclically during feeding in the radular retraction phase of the protraction/retraction cycle and drive many other retraction neurons.
- Based on radular and soft-tissue morphology and personal observation of feeding behaviors, it appears that species from both regions feed suctorially with the assistance of a diminutive radula.
- The main argument for the molluscan nature of Kimberella remains thus its association with putative radular marks proposed by Seilacher.

Origin

Late 19th century: from Latin, literally 'scraper', from radere 'to scrape'.

Definition of radula in US English:

radula

nounˈrajələˈrædʒələ

Zoology

(in a mollusk) a structure of tiny teeth used for scraping food particles off a surface and drawing them into the mouth.
〔动〕（软体动物的）齿板，齿舌
Example sentencesExamples
- The correct characterization of fossil taxa is difficult as specimens are missing many important features necessary for an accurate identification, particularly protoconchs and radulae.
- In some chitons, the radula has teeth tipped with magnetite, which hardens them.
- Threadlike cilia-bearing tentacles probe for food, such as forams, detritus, and even the occasional buried bivalve, and bring it to the mouth where a large radula grinds it up.
- Once the prey is snared it is bitten with strong beak-like jaws and pulled into the mouth by the radula.
- Most mollusks use the radula to break up food, but the cone snail uses it to inject venom.

Origin

Late 19th century: from Latin, literally ‘scraper’, from radere ‘to scrape’.

词汇	radula
释义	Definition of radula in English: radula nounPlural radulae ˈradjʊləˈrædʒələ Zoology (in a mollusc) a structure of tiny teeth used for scraping food particles off a surface and drawing them into the mouth. 〔动〕（软体动物的）齿板，齿舌 Example sentencesExamples In some chitons, the radula has teeth tipped with magnetite, which hardens them. Threadlike cilia-bearing tentacles probe for food, such as forams, detritus, and even the occasional buried bivalve, and bring it to the mouth where a large radula grinds it up. Once the prey is snared it is bitten with strong beak-like jaws and pulled into the mouth by the radula. Most mollusks use the radula to break up food, but the cone snail uses it to inject venom. The correct characterization of fossil taxa is difficult as specimens are missing many important features necessary for an accurate identification, particularly protoconchs and radulae. Derivatives radular adjective Zoology It is significant that a minority of ammonites and incirrate octopods have radular teeth of this type, or exhibit much size dimorphism. Example sentencesExamples Major interneurons fire cyclically during feeding in the radular retraction phase of the protraction/retraction cycle and drive many other retraction neurons. Based on radular and soft-tissue morphology and personal observation of feeding behaviors, it appears that species from both regions feed suctorially with the assistance of a diminutive radula. The main argument for the molluscan nature of Kimberella remains thus its association with putative radular marks proposed by Seilacher. Origin Late 19th century: from Latin, literally 'scraper', from radere 'to scrape'. Definition of radula in US English: radula nounˈrajələˈrædʒələ Zoology (in a mollusk) a structure of tiny teeth used for scraping food particles off a surface and drawing them into the mouth. 〔动〕（软体动物的）齿板，齿舌 Example sentencesExamples The correct characterization of fossil taxa is difficult as specimens are missing many important features necessary for an accurate identification, particularly protoconchs and radulae. In some chitons, the radula has teeth tipped with magnetite, which hardens them. Threadlike cilia-bearing tentacles probe for food, such as forams, detritus, and even the occasional buried bivalve, and bring it to the mouth where a large radula grinds it up. Once the prey is snared it is bitten with strong beak-like jaws and pulled into the mouth by the radula. Most mollusks use the radula to break up food, but the cone snail uses it to inject venom. Origin Late 19th century: from Latin, literally ‘scraper’, from radere ‘to scrape’.
随便看	not up to par not up to scratch not up to snuff not up to standard/par Notus not used not validated not very not very not very good not very important not very many not (very) well not visible not vulnerable not want to not want to know not want to know not well not wellish not what it was not what it was cracked up to be not whole not wholly not wild