achromatismn.
/əˈkrəʊmətɪz(ə)m/, /(ˌ)eɪˈkrəʊmətɪz(ə)m/, U.S. /eɪˈkroʊməˌtɪz(ə)m/, /æˈkroʊməˌtɪz(ə)m/ Science.
= achromaticity n.
ΘΚΠ
the world > matter > colour > state or mode of having colour > absence of colour > [noun]
uncolouredness1660
colourlessness1672
achromatism1797
achromaticity1821
blankness1850
huelessness1861
mirage1927
1797 Encycl. Brit. at Telescope Mr. Dollond was anxious to combine this achromatism of the eye-pieces with the advantages which he had found in the eye-pieces with five glasses.
1837 C. R. Goring & A. Pritchard Micrographia 77 Perfectly direct day-light also gives apparent achromatism with any common uncorrected lenses.
1887 Jrnl. Royal Microsc. Soc. 7 23 In the new objectives..the elimination of these errors realizes an achromatism of higher order than has hitherto been attained.
1939 R. Kingslake in K. Henney & B. Dudley Handbk. Photogr. iii. 37 The lack of achromatism of this lens was soon found to be a disadvantage.
1998 Philos. Trans. (Royal Soc.) A. 356 1994 An achromatic system..and a degrader shaped to preserve the achromatism.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).
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n.1797- marine rainbow
- marine regiment
- marine riser
- marine salt
- marine sauce
- marine science
- marine scientific
- marine scientist
- marine selenite
- marine settler
- marine snow
- marine soap
- marine soldier
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- marine zoological
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- marine-salt
- marine-set
- marine-store dealer
- marine-store keeper