Definition of bulb

What does the word bulb mean? Find synonyms, antonyms and the meaning of the word bulb in our free online dictionary! Find words starting with bulb and anagrams of bulb.
Lookup bulb in the Scrabble Dictionary

bulb - 7 definitions

- noun
1. bulb -- a modified bud consisting of a thickened globular underground stem serving as a reproductive structure
Source:WordNet 3.0
 
2. light bulb -- electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity
synonyms: light bulb, lightbulb, incandescent lamp, electric light, electric-light bulb
Source:WordNet 3.0
 
3. bulb -- a rounded part of a cylindrical instrument (usually at one end); "the bulb of a syringe"
Source:WordNet 3.0
 
4. bulb -- anything with a round shape resembling a teardrop
Source:WordNet 3.0
 
5. medulla oblongata -- lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
synonyms: medulla oblongata, medulla
Source:WordNet 3.0
 
6. bulb -- a rounded dilation or expansion in a canal or vessel or organ
Source:WordNet 3.0
 
7. bulb, bulbs -- an underground bud
synonyms: bulbs, bulbar, bulbed, bulbing
Source:OWL 2 Web Ontology Language
 
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