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单词 polycrase
释义

Definition of polycrase in English:

polycrase

noun ˈpɒlɪkreɪzˈpɒlɪkreɪs
Mineralogy
  • A mineral (belonging to the orthorhombic crystal system but usually metamict) that consists of an oxide of titanium, niobium, tantalum, uranium, yttrium, and other elements, and occurs as short, prismatic, black crystals.

Origin

Mid 19th century; earliest use found in American Journal of Science. From German Polykras from ancient Greek πολυ- + κρᾶσις mixture, so called on account of its many constituents.

 
 

Definition of polycrase in US English:

polycrase

noun
Mineralogy
  • A mineral (belonging to the orthorhombic crystal system but usually metamict) that consists of an oxide of titanium, niobium, tantalum, uranium, yttrium, and other elements, and occurs as short, prismatic, black crystals.

Origin

Mid 19th century; earliest use found in American Journal of Science. From German Polykras from ancient Greek πολυ- + κρᾶσις mixture, so called on account of its many constituents.

 
 
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更新时间:2025/3/1 9:35:40