white lead

[led]

white lead

[led]
noun
1.
a white, heavy powder, basic lead carbonate, 2PbCO3⋅Pb(OH)2, used as a pigment, in putty, and in medicinal ointments for burns.
2.
the putty made from this substance in oil.

Origin:
1400–50; late Middle English
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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White lead is always a great word to know.
So is quincunx. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
white lead (lɛd)
 
n
1.  Also called: ceruse a white solid usually regarded as a mixture of lead carbonate and lead hydroxide; basic lead carbonate: used in paint and in making putty and ointments for the treatment of burns. Formula: 2PbCO3.Pb(OH)2
2.  either of two similar white pigments based on lead sulphate or lead silicate
3.  a type of putty made by mixing white lead with boiled linseed oil

Collins English Dictionary - Complete & Unabridged 10th Edition
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