achromatic
UK/ækrәu'mætik/US
GREC2
Definitions
adj.
Without color; (of colors) having no hue, i.e. black, white, or grey
无色的；（颜色）无彩色的（黑、白、灰）
adj.
(of a lens) transmitting light without separating it into colors; free from chromatic aberration
（透镜）消色差的
Root Breakdown
Root-deriveda- (Greek 'without, not') + chromat (color) + -ic = 'without color.' This is the same Greek negative a- as in atypical or amoral. The key technical use is optical: an achromatic lens focuses different colors to the same point, so it doesn't fringe an image with rainbow edges.
Root chrom still carries 5 more wordsCommon Collocations
- 1.achromatic lens消色差透镜
- 2.achromatic colors无彩色
Example Sentences
- 1.
An achromatic lens keeps colors from blurring at the edges.
- 2.
Black, white, and grey are the achromatic colors.
- 3.
The telescope uses an achromatic design to sharpen the image.