achromaticity

[ak-roh-muh-tis-i-tee, ey-kroh-]
noun Optics.

Origin:
1835–45; achromatic + -ity

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achromatic (ˌækrəˈmætɪk)
 
adj
1.  without colour
2.  capable of reflecting or refracting light without chromatic aberration
3.  cytology
 a.  not staining with standard dyes
 b.  of or relating to achromatin
4.  music
 a.  involving no sharps or flats
 b.  another word for diatonic
5.  denoting a person who is an achromat
 
achro'matically
 
adv
 
achromatism
 
n
 
achromaticity
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
In presence of linear space charge this definition of achromaticity does not hold.
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