bulb

bulb

B0538200 (bŭlb)n.1. Botany a. A short, modified, underground stem surrounded by usually fleshy modified leaves that contain stored food for the shoot within: an onion bulb; a tulip bulb.b. A similar underground stem or root, such as a corm, rhizome, or tuber.c. A plant that grows from a bulb.2. A rounded projection or part: the bulb of a syringe.3. A light bulb.4. Anatomy A rounded dilation or expansion of a canal, vessel, or organ.

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[Latin bulbus, from Greek bolbos, bulbous plant.]

bulb

(bʌlb) n1. (Botany) a rounded organ of vegetative reproduction in plants such as the tulip and onion: a flattened stem bearing a central shoot surrounded by fleshy nutritive inner leaves and thin brown outer leaves. Compare corm2. (Botany) a plant, such as a hyacinth or daffodil, that grows from a bulb3. (Electrical Engineering) See light bulb4. (General Engineering) a rounded part of an instrument such as a syringe or thermometer5. (Anatomy) anatomy a rounded expansion of a cylindrical organ or part, such as the medulla oblongata6. (Nautical Terms) Also called: bulbous bow a bulbous protuberance at the forefoot of a ship to reduce turbulence[C16: from Latin bulbus, from Greek bolbos onion]

bulb

(bʌlb)

n. 1. a. a swollen, usu. underground stem having fleshy scalelike leaves that contain stored food, as in the onion or daffodil. b. a plant growing from such a stem. 2. any round, enlarged part, esp. at the end of a cylindrical object: the bulb of a thermometer. 3. a. the glass housing, in which a partial vacuum has been established, that contains the filament of an incandescent lamp. b. an incandescent lamp. 4. any of various small, bulb-shaped anatomical structures or protuberances: olfactory bulb. 5. medulla oblongata. 6. a camera shutter setting in which the shutter remains open as long as the shutter release is depressed. [1560–70; < Latin bulbus < Greek bolbós onion]

bulb

(bŭlb)1. A round part of a stem that develops underground and contains the shoot of a new plant. A bulb is surrounded by leaf-like scales that provide nourishment to the new plant. Tulips, lilies, and onions grow from bulbs. Compare corm, rhizome, runner, tuber.2. The part of an incandescent or fluorescent lamp that gives off light. The bulb of an incandescent lamp contains a filament inside a usually rounded piece of glass. The bulb of a fluorescent lamp is a glass tube or chamber containing a mixture of gases without a filament.

Thesaurus

Noun	1.	bulb - a modified bud consisting of a thickened globular underground stem serving as a reproductive structureonion - the bulb of an onion plantshallot - aggregate bulb of the multiplier onionsquill - bulb of the sea squill, which is sliced, dried, and used as an expectorantstalk, stem - a slender or elongated structure that supports a plant or fungus or a plant part or plant organbulbil, bulblet - small bulb or bulb-shaped growth arising from the leaf axil or in the place of flowers
	2.	bulb - electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricityelectric light, electric-light bulb, incandescent lamp, light bulb, lightbulbelectric lamp - a lamp powered by electricityfilament - a thin wire (usually tungsten) that is heated white hot by the passage of an electric current
	3.	bulb - a rounded part of a cylindrical instrument (usually at one end); "the bulb of a syringe"mercury thermometer, mercury-in-glass thermometer - thermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or Fahrenheit; mercury expands with a rise in temperature causing a thin thread of mercury to rise in the tubepart, portion - something less than the whole of a human artifact; "the rear part of the house"; "glue the two parts together"syringe - a medical instrument used to inject or withdraw fluids
	4.	bulb - anything with a round shape resembling a teardropround shape - a shape that is curved and without sharp angles
	5.	bulb - 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"medulla oblongata, medullaneural structure - a structure that is part of the nervous systembrain stem, brainstem, brain-stem - the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamusrespiratory center - the center in the medulla oblongata and pons that integrates sensory information about the level of oxygen and carbon dioxide in the blood and determines the signals to be sent to the respiratory muscles
	6.	bulb - a rounded dilation or expansion in a canal or vessel or organanatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"

bulb

noun tuber, rhizome, corm a tulip bulb

Translations

球茎电灯泡水银球灯泡

bulb

(balb) noun1. the ball-shaped part of the stem of certain plants, eg onions, tulips etc, from which their roots grow. 球莖 球茎2. (also ˈlight bulb) a pear-shaped glass globe surrounding the element of an electric light. 電燈泡 电灯泡3. the pear-shaped end of a thermometer. 水銀球 水银球ˈbulbous adjective like a bulb, especially in shape. a bulbous nose. 球莖狀的 球茎状的

bulb

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