bulb

A2 CET-4 大学 FREQ #9612 ★★☆☆☆

n. 球茎, 电灯泡 [医] 球, 鳞茎, 球茎

发音

/ˈbʌlb/
US /ˈbʌb/

词形变化

bulbs 复数 bulbs bulbing bulbs 三单 bulbing 现在分词 bulbed 过去式 bulbed 过去分词

教材释义与例句

名词

电灯泡；鳞茎；球状物

动词

生球茎；膨胀成球状

释义与例句

n. A2
  1. 1.

    The bulb-shaped underground portion of a plant such as a tulip, consisting of a shortened stem and many fleshy scale leaves, from which the rest of the plant may be regrown.

    鳞茎

  2. 2.

    The medulla oblongata.

    过时 医学
  3. 3.

    Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end.

    泡

    the bulb of the aorta

  4. 4.

    Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end.

    A light bulb (not necessarily bulbous in shape).

    an incandescent bulb

    an LED bulb

    a fluorescent tube bulb

  5. 5.

    A bulbous protuberance at the forefoot of certain vessels to reduce turbulence.

    航海 交通
  6. 6.

    An onion.

    废旧
v.
  1. 1.

    To take the shape of a bulb; to swell.

    不及物

词汇关系

名词

同义词 5

lightbulb electric light incandescent lamp medulla medulla oblongata

上位词 5

part structure portion stem stalk

下位词 6

onion shallot bulbil bulblet CFL squill

部分词 1

filament

整体词 2

syringe brainstem

相关短语

light bulb n. 灯泡 bulb tee bulb tees bulb horn bulb horns light bulb joke dry bulb temperature light bulb jokes dry bulb temperatures not the brightest bulb in the chandelier wet bulb temperature [化] 湿球温度 wet bulb temperatures hot bulb [机] 热球 dim bulb

词源

Etymology tree Ancient Greek βολβός (bolbós)bor. Latin bulbusder. English bulb Inherited from Middle English bulb, bolbe, from Latin bulbus (“bulb, onion”), from Ancient Greek βολβός (bolbós, “plant with round swelling on underground stem”).

来源：wiktionary