| 释义 |
Definition of grey powder in English: grey powder(US gray powder) noun 1Chalk mixed with finely divided mercury, originally used medicinally (especially as a laxative) and later used in fingerprinting (now historical). 2Any of various other, usually aluminium-based, powders used in fingerprinting.
OriginMid 19th century; earliest use found in Cecilia Ridley (1819–1845). Definition of grey powder in US English: grey powder(US gray powder) noun 1Chalk mixed with finely divided mercury, originally used medicinally (especially as a laxative) and later used in fingerprinting (now historical). 2Any of various other, usually aluminium-based, powders used in fingerprinting.
OriginMid 19th century; earliest use found in Cecilia Ridley (1819–1845). |