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aplanatic

American  
[ap-luh-nat-ik] / ˌæp ləˈnæt ɪk /

adjective

Optics.
  1. free from spherical aberration and coma.


aplanatic British  
/ ˌæpləˈnætɪk /

adjective

  1. (of a lens or mirror) free from spherical aberration

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of aplanatic

1785–95; a- 6 + Greek planá ( ein ) to wander + -tic. See planet

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Mr. Orguly Bolp's large painting, entitled "Embrocation," is an interesting experiment in the handling of aplanatic surfaces, in which the toxic determinants are harmonized by a sort of plastic meiosis with syncopated rhythms.

From Punch, or the London Charivari, Vol. 150, April 5, 1916 by Seaman, Owen, Sir

It was thought that the use of this Herschel aplanatic combination as an eyepiece, combined with the Wollaston doublet for the objective, came as near perfection as the compound microscope was likely soon to come.

From A History of Science — Volume 4 by Williams, Henry Smith

The same with three aplanatic lenses after Steinheil, magnifying 8, 16 and 20 diameters $28.—

From Microscopes and Accessory Apparatus Catalogue No. 40 by Leitz, Ernst

The aplanatic lenses Nos. 62-66 are also to be had with a moveable cover and ring adapting them for use as pocket lenses.

From Microscopes and Accessory Apparatus Catalogue No. 40 by Leitz, Ernst

"Thank you; I have a pretty good one of my own," Tom answered, diving into one of his pockets and bringing to light a small but powerful reading glass with an aplanatic lens.

From The Young Engineers in Colorado Or, At Railwood Building in Earnest by Hancock, H. Irving (Harrie Irving)

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