English - Vietnamese Dictionary
diameter /dai'æmitə/Concise Dictionary
- danh từ
- số phóng to (của thấu kính...)
- lens magnifying 20 diameters: thấu kính phóng to 20 lần
diametersdaɪ'æmɪtəAdvanced English Dictionary
+the length of a straight line passing through the center of a circle and connecting two points on the circumference
+a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)
+ nounCollocation Dictionary
1 a straight line going from one side of a circle or any other round object to the other side, passing through the centre
Compare: RADIUS: the diameter of a tree trunk + The dome is 42.3 metres in diameter.
2 (technical) a measurement of the power of an instrument to MAGNIFY sth: a lens magnifying 300 diameters (= making sth look 300 times larger than it really is).
The tubes have an internal diameter of 2mm.
| external, outside | large, small
VERB + DIAMETER
calculate, find, measure
He used similar triangles to calculate the diameter of the earth.
The mirror is 25cm in diameter.
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