Pronunciation Noun

bulb (plural bulbs)

  1. Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end.
    the bulb of the aorta
  2. A light bulb.
  3. The bulb-shaped root portion of a plant such as a tulip, from which the rest of the plant may be regrown.
    • 2005, Plato, Sophist. Translation by Lesley Brown. 265c.
      the plants which grow in the earth from seed or bulbs.
  4. (nautical) a bulbous protuberance at the forefoot of certain vessels to reduce turbulence.
  5. (dated, neuroanatomy) The medulla oblongata.
Related terms Translations
  • French: bulbe
  • Portuguese: bulbo
  • Russian: утолще́ние
Translations Verb

bulb (bulbs, present participle bulbing; past and past participle bulbed)

  1. (intransitive) To take the shape of a bulb; to swell.

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