plumbago


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plumbago

(plŭm'bā`gō): see graphitegraphite
, an allotropic form of carbon, known also as plumbago and black lead. It is dark gray or black, crystalline (often in the form of slippery scales), greasy, and soft, with a metallic luster.
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plumbago

[‚pləm′bā·gō]
(mineralogy)

graphite, plumbago

One of the forms under which carbon occurs in nature; electrically conductive; in powdered form, used as a lubricant.
References in periodicals archive ?
Analgesic activity of methanol extract of Plumbago indica (L.) by acetic acid induced writhing method.
Kulakarni, "Studies on the root constituents of Plumbago zeylanica," Journal of the University of Poona.
Quantitative investigation on the dynamics of plumbagin in Plumbago europea L.
Plumbagin, 5-hydroxy-2-methyl-1, 4-nepthoquinone isolated from Plumbago zeylanica cured R-plasmids in E.
My favorites are milkweed and blue porterweeds, a few pentas, a couple of larger plants like plumbago and clerodendrum.
In 1973 John became a partner in Plumbago Mining Corporation when he acquired the interests of George Hartman, one of the original partners.
Among the colorful specimens now on display on the property are daylilies, snowball trees, hydrangea, plumbago, Peruvian lilies, verbena, hibiscus, butterfly bushes, phlox, cannas, white and orange ginger lilies, dianthus, and daffodils.
From England, growing in the gardens of our London apartment, I snipped from Ceratostigma willmottianum - a member of the plumbago family - several cuttings in the summer of 2007.