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plumbago

PRIMARY MEANINGS OF: plumbago

1
 n
used as a lubricant and as a moderator in nuclear reactors
2
 n
any plumbaginaceous plant of the genus Plumbago
FULL DEFINITIONS OF: plumbago
1

n used as a lubricant and as a moderator in nuclear reactors

Synonyms:
black lead, graphite
Types:
lead, pencil lead
mixture of graphite with clay in different degrees of hardness; the marking substance in a pencil
pencil
graphite (or a similar substance) used in such a way as to be a medium of communication
Type of:
C, atomic number 6, carbon
an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
2

n any plumbaginaceous plant of the genus Plumbago

Type of:
herb, herbaceous plant
a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
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