prases

prase

[preyz]
noun Mineralogy.
a leek-green cryptocrystalline variety of chalcedony.

Origin:
1350–1400; < French < Latin prasius leek-green stone < Greek prásios leek-green, derivative of práson leek; replacing Middle English prassius < Latin, as above

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World English Dictionary
prase (preɪz)
 
n
a light green translucent variety of chalcedony
 
[C14: from French, from Latin prasius a leek-green stone, from Greek prasios, from prason a leek]

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