English noun: bulb |
1. | bulb (plant) a modified bud consisting of a thickened globular underground stem serving as a reproductive structure |
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| Broader (hypernym) | stalk, stem |
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| Narrower (hyponym) | bulbil, bulblet, onion, shallot, squill |
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2. | bulb (artifact) electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity |
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| Synonyms | electric light, electric-light bulb, incandescent lamp, light bulb, lightbulb |
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| Broader (hypernym) | electric lamp |
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| Part holonym | filament |
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3. | bulb (artifact) a rounded part of a cylindrical instrument (usually at one end) |
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| Samples | The bulb of a syringe.
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| Broader (hypernym) | part, portion |
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| Part meronym | mercury thermometer, mercury-in-glass thermometer, syringe |
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4. | bulb (shape) anything with a round shape resembling a teardrop |
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| Broader (hypernym) | round shape |
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5. | bulb (body) lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata) |
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| Samples | The medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning.
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| Synonyms | medulla, medulla oblongata |
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| Broader (hypernym) | neural structure |
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| Part holonym | respiratory center |
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| Part meronym | brain stem, brain-stem, brainstem |
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6. | bulb (body) a rounded dilation or expansion in a canal or vessel or organ |
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| Broader (hypernym) | anatomical structure, bodily structure, body structure, complex body part, structure |
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