PLUMBAGO

 Dictionary entry overview: What does plumbago mean? 

• PLUMBAGO (noun)
  The noun PLUMBAGO has 2 senses:

1. used as a lubricant and as a moderator in nuclear reactors
2. any plumbaginaceous plant of the genus Plumbago

  Familiarity information: PLUMBAGO used as a noun is rare.

 Dictionary entry details 

• PLUMBAGO (noun)

Meaning:

Used as a lubricant and as a moderator in nuclear reactors

Classified under:

Nouns denoting substances

Synonyms:

black lead; graphite; plumbago

Hypernyms ("plumbago" is a kind of...):

atomic number 6; C; carbon (an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds)

Hyponyms (each of the following is a kind of "plumbago"):

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)

Meaning:

Any plumbaginaceous plant of the genus Plumbago

Classified under:

Nouns denoting plants

Hypernyms ("plumbago" is a kind 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)

Holonyms ("plumbago" is a member of...):

genus Plumbago (shrubs and herbs and woody vines of warm regions: leadwort)