Plumbago
[plʌm'beigәu]
Definition
(n.) Same as Graphite.
(n.) A genus of herbaceous plants with pretty salver-shaped corollas, usually blue or violet; leadwort.
Inputed by Jill
Synonyms and Synonymous
n. Black-lead, graphite.
Typed by Ewing
Definition
n. a mineral composed of carbon iron and other materials used for pencils &c. popularly called 'blacklead:' graphite: a genus of plants with blue or violet flowers.—adj. Plumbag′inous.
Typed by Barack
Examples
- It consists of a series of silk disks saturated with a sizing of plumbago and well dried. Frank Lewis Dyer. Edison, His Life and Inventions.
- The poles of the electromagnet in the local circuit are hollowed out and filled up with carbon disks or powdered plumbago. Frank Lewis Dyer. Edison, His Life and Inventions.
- In 1840 Murray used plumbago to make non-conducting surfaces conductive for electro-plating. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
Typed by Enid