| 释义 |
Definition of druse in English: drusenoun druːzdruz 1Geology
A rock cavity lined with a crust of projecting crystals. - 1.1 The crust of crystals lining a druse.
Example sentencesExamples - It generally occurs as crystalline druses on chalcopyrite, tetrahedrite, and other minerals and is sometimes associated with polybasite and dyscrasite.
- The crystals form druses that line the pockets and partially coat the copper crystal groups.
- Most such specimens are partially coated with a druse of calcite, epidote, and small, clear needle quartz crystals.
- Like the malachite, it occurs as druses that are perpendicularly attached to columns of gypsum.
- The contact between these zones is marked by large voids, the bottom surfaces of which are encrusted with druses of tabular microcline crystals.
2Botany
A rounded cluster of calcium oxalate crystals found in some plant cells. Example sentencesExamples - Considerable quantities of calcium oxalate druses were found in the leaves.
- Occasionally, calcium oxalate raphide or druse crystals were observed in this tissue.
- Some diagnostic features can be easily mistaken for others: short hairs for prickles, small glands and druses for papillae, etc.
Derivatives adjective ˈdruːziˈdruzi Geology (of a rock cavity or surface) lined with a crust of projecting crystals. a drusy cavity of a green mineral Example sentencesExamples - The only consistently correct identifications were those made when distinct crystals could be seen or when the apple-green spheres were compact, with their outer surface smooth or only slightly drusy.
- They are brown in color, are usually encrusted with drusy quartz crystals, and reach lengths of 6 cm or more.
- To top it off, some of the quartz crystal vugs contain translucent pseudocubic crystals of calcite, to 1.2 cm on edge, perched on the drusy quartz.
Origin Early 19th century: via French from German Druse 'weathered ore'. Definition of druse in US English: drusenoundruzdro͞oz 1Geology
A rock cavity lined with a crust of projecting crystals. - 1.1 The crust of crystals lining a rock cavity.
Example sentencesExamples - Like the malachite, it occurs as druses that are perpendicularly attached to columns of gypsum.
- Most such specimens are partially coated with a druse of calcite, epidote, and small, clear needle quartz crystals.
- The contact between these zones is marked by large voids, the bottom surfaces of which are encrusted with druses of tabular microcline crystals.
- The crystals form druses that line the pockets and partially coat the copper crystal groups.
- It generally occurs as crystalline druses on chalcopyrite, tetrahedrite, and other minerals and is sometimes associated with polybasite and dyscrasite.
2Botany
A rounded cluster of calcium oxalate crystals found in some plant cells. Example sentencesExamples - Considerable quantities of calcium oxalate druses were found in the leaves.
- Occasionally, calcium oxalate raphide or druse crystals were observed in this tissue.
- Some diagnostic features can be easily mistaken for others: short hairs for prickles, small glands and druses for papillae, etc.
Origin Early 19th century: via French from German Druse ‘weathered ore’. |