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druse

Syllabification: druse
Pronunciation: /dro͞oz
 
/

Definition of druse in English:

noun

1 Geology A rock cavity lined with a crust of projecting crystals.
1.1The crust of crystals lining a rock cavity.
Example sentences
  • The contact between these zones is marked by large voids, the bottom surfaces of which are encrusted with druses of tabular microcline crystals.
  • It generally occurs as crystalline druses on chalcopyrite, tetrahedrite, and other minerals and is sometimes associated with polybasite and dyscrasite.
  • Like the malachite, it occurs as druses that are perpendicularly attached to columns of gypsum.
2 Botany A rounded cluster of calcium oxalate crystals found in some plant cells.
Example sentences
  • Occasionally, calcium oxalate raphide or druse crystals were observed in this tissue.
  • Considerable quantities of calcium oxalate druses were found in the leaves.
  • 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'.

Derivatives

drusy

1
adjective
( Geology )
Example sentences
  • 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.
  • 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.
  • They are brown in color, are usually encrusted with drusy quartz crystals, and reach lengths of 6 cm or more.

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