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TOEFL IELTS BNC: 5690 COCA: 4901

bulb

bulb /ˈbʌlb/ noun
plural bulbs
bulb
/ˈbʌlb/
noun
plural bulbs
Learner's definition of BULB
[count]
: light bulb
see also dim bulb
: a rounded part of some plants that is under the ground and that grows into a new plant during the growing season(植物的)鳞茎,球茎
see color picture on this page
: a part that has a rounded shape球状物
TOEFL IELTS BNC: 5690 COCA: 4901
plural bulbs
1
a
: a resting stage of a plant (such as the lily, onion, hyacinth, or tulip) that is usually formed underground and consists of a short stem base bearing one or more buds enclosed in overlapping membranous or fleshy leaves
b
: a fleshy structure (such as a tuber or corm) resembling a bulb in appearance
c
: a plant having or developing from a bulb
2
: a bulb-shaped part
specifically : a glass envelope enclosing the light source of an electric lamp or such an envelope together with the light source it encloses
3
: a rounded or swollen anatomical structure
4
: a camera setting that indicates that the shutter can be opened by pressing on the release and closed by ending the pressure
bulbed adjective
flasks with bulbed necks
bulblike adjective
or bulb-like
… a large underground rhizome, a bulblike growth that extends massive roots from its underside. Elizabeth Schneider

Illustration of bulb

Illustration of bulb
  • 1 hyacinth
  • 2 onion
  • 3 tulip
  • 4 lily

Example Sentences

the bulb of the thermometer
Recent Examples on the Web The more lumens in a bulb, the higher the brightness, and vice versa. Madison Yauger, Peoplemag, 30 Aug. 2022 As simple as screwing in a bulb, this floodlight offers 30 feet of detection and 1,500 lumens. Kaz Weida, Popular Mechanics, 29 Aug. 2022 Consider swapping out your regular front porch light for a colored bulb to wash the entire area in a chilling color. Megan Boettcher, Better Homes & Gardens, 27 Aug. 2022 This stem and flower end together are called a scape, which is a botanical term for this specific type of long, sturdy stem emerging from a bulb. Susan Brownstein, cleveland, 5 July 2022 To raise the additional $10,000 for the sign, Dolan came up with a sponsorship idea: People could pay $5,000 to buy a whole word or $50 to buy a bulb. Matt Yan, BostonGlobe.com, 8 June 2022 The exception is amaryllis, which will bloom from a bulb in a matter of months. Jada Jackson, House Beautiful, 29 May 2022 Alternatively, make your own by placing a whole fresh garlic bulb in a slow cooker on warm (not low) for 2 to 3 weeks. Foren Clark, Cnn. Recipe From Alice Caporicci, CNN, 15 May 2022 For a small, two-person campsite, look for a lantern with at least 500 lumens, while 1000 lumens (about as bright as a 60-watt incandescent bulb) is enough to illuminate the entire site. Mike Richard, Men's Health, 13 May 2022 See More

Word History

Etymology

Middle English, from Latin bulbus, from Greek bolbos bulbous plant

First Known Use

15th century, in the meaning defined at sense 1a

Time Traveler
The first known use of bulb was in the 15th century
TOEFL IELTS BNC: 5690 COCA: 4901
bulb

noun¹

1part of an electric lamp電燈ADJECTIVE | VERB + BULB | BULB + VERB ADJECTIVEelectric電燈泡light電燈泡100-watt, 60-watt, etc. * 100 瓦、60 瓦等的電燈泡bare, naked無罩燈泡single單個燈泡bright, dim明亮的/昏暗的燈泡A single dim light bulb lit the room.屋裏只有一隻昏暗的燈泡照明。energy-efficient, energy-saving, low-energy (especially BrE) 節能燈泡;低能耗燈泡fluorescent, incandescent熒光燈泡;白熾燈泡halogen滷素燈泡clear, coloured/colored透明/彩色燈泡VERB + BULBchange, replace換燈泡Switch the light off before you change the bulb.換燈泡前把燈關上。remove, unscrew取下/擰下燈泡Can you remove the bulb and replace it with an energy-efficient one?你能將那個燈泡取下來換上一個節能燈泡嗎?BULB + VERBlight sth燈泡照亮⋯The room was lit only by a single 40-watt light bulb.房間只有一隻 40 瓦的燈泡照明。go燈泡壞掉I think the bulb is going to go. It's been flickering all evening.我想這隻燈泡就要壞了,它整個晚上一直在閃。flicker燈泡忽閃flash, go off燈泡閃亮/熄滅Red and green bulbs flashed on and off.紅紅綠綠的燈泡時明時滅地閃爍。There was a startled look on his face when the flashbulb went off.閃光燈閃過時,他臉上一副驚愕的表情。hang燈泡懸垂A single electric light bulb hung from the ceiling.一隻電燈泡從天花板上垂下來。last燈泡持續使用(⋯時間)These new bulbs last much longer than the ordinary ones.這些新燈泡比普通燈泡壽命長。
bulb

noun²

2round plant root(植物)鱗莖ADJECTIVE | VERB + BULB | BULB + VERB ADJECTIVEflower花的鱗莖spring, spring-flowering, summer, summer-flowering春天開花的鱗莖;夏天開花的鱗莖daffodil, tulip, etc.水仙、鬱金香等鱗莖VERB + BULBplace, plant種鱗莖I'm planting some bulbs for next year.我正在種一些鱗莖,為明年生長做準備。Place the bulbs close together.把這些鱗莖密集地埋種在一起。dig up, take up挖出鱗莖grow種植鱗莖water給鱗莖澆水She usually waters the indoor bulbs once a week.她通常每星期給室內的鱗莖澆一次水。BULB + VERBgrow鱗莖生長flower鱗莖開花sprout鱗莖發芽

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