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单词 scalariform
释义

Definition of scalariform in English:

scalariform

adjective skəˈlarɪfɔːmskəˈlerəˌfôrm
Botany
  • (especially of the walls of water-conducting cells) having thickened bands arranged like the rungs of a ladder.

    Example sentencesExamples
    • The P-type cell has scalariform pitting typical of most modern vascular plants.
    • Twenty-two per cent of the woods have scalariform perforation plates, and 29% are semi-ring porous.
    • Thus far, all of the instances of pit membrane remnants occur in dicotyledons of highly mesic habitats, just as scalariform perforation plates do, although ‘mesic’ must be defined in terms of water availability, not rainfall amounts.
    • The secondary wall in an NTE is mainly in the form of bars so that the wall varies from annular to scalariform.
    • Archaeosigillaria had an exarch actinostele with scalariform and reticulate tracheids.

Origin

Mid 19th century: from Latin scalaris 'of a ladder' + -iform.

 
 

Definition of scalariform in US English:

scalariform

adjectiveskəˈlerəˌfôrm
Botany
  • (especially of the walls of water-conducting cells) having thickened bands arranged like the rungs of a ladder.

    Example sentencesExamples
    • Thus far, all of the instances of pit membrane remnants occur in dicotyledons of highly mesic habitats, just as scalariform perforation plates do, although ‘mesic’ must be defined in terms of water availability, not rainfall amounts.
    • Archaeosigillaria had an exarch actinostele with scalariform and reticulate tracheids.
    • Twenty-two per cent of the woods have scalariform perforation plates, and 29% are semi-ring porous.
    • The P-type cell has scalariform pitting typical of most modern vascular plants.
    • The secondary wall in an NTE is mainly in the form of bars so that the wall varies from annular to scalariform.

Origin

Mid 19th century: from Latin scalaris ‘of a ladder’ + -form.

 
 
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更新时间:2024/12/24 2:49:14