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diameter

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diameter

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
Related topics: Maths
di·am·e·ter /daɪˈæmɪtə $ -ər/ ●●○ noun [countable]  HMHMa straight line from one side of a circle to the other side, passing through the centre of the circle, or the length of this line 直径3 inches/1 metre etc in diameter Draw a circle six centimetres in diameter. 画一个直径为六厘米的圆。diameter of The diameter of the Earth is about 13,000 km. 地球的直径约为13,000公里。5 see picture at 见图 circle1
Examples from the Corpus
diameterThe arms are long and thin, greater than seven times the disk diameter.When a disc is rolled about a disc of equal diameter, the roller makes two revolutions about its own centre.In addition, the procedure usually takes longer and an endoscope of a greater diameter is used when biliary stenting is performed.The belt, however, consists of perhaps forty thousand bodies larger than a kilometer in diameter.This originally had two large diameter undershot wheels, both of iron construction with timber floats.He then proceeded to draw a circle of diameter I metre on a flat piece of ground.For every pebble several possible diameters may be recognized along the three principal axes of the pebble.
Origin diameter (1300-1400) Old French diametre, from Greek diametros measure across, from metron measure
di·am·e·ter nounChineseSyllable
circle straight Corpus from line of one to side a a the


diameter
diameter /daɪˈæmətə, daɪˈæmɪtə $ -ər/ noun [countable]
 Date: 1300-1400
 Language: Old French
 Origin: diametre, from Greek diametros 'measure across', from metron 'measure'
a straight line from one side of a circle to the other side, passing through the centre of the circle, or the length of this line
    3 inches/1 metre etc in diameter
    Draw a circle six centimetres in diameter.
    diameter of
    The diameter of the Earth is about 13,000 km.


diam·eterBrE /daɪˈæmɪtə(r)/ 🔊NAmE /daɪˈæmɪtər/ 🔊 noun
a straight line going from one side of a circle or any other round object to the other side, passing through the centre 直径;对径the diameter of a tree trunk树干的直径The dome is 42.3 metres in diameter. 这个穹顶直径为 42.3 米。🔊🔊   compare radius (1)
(specialist) a measurement of the power of an instrument to magnify sth 放大率;放大倍数a lens magnifying 300 diameters (= making sth look 300 times larger than it really is) 放大 300 倍的透镜