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Definition of "eyepiece" [eye•piece]

  • The lens or lens group closest to the eye in an optical instrument; an ocular. Also called eyeglass. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "eyepiece" in a sentence
  • "Bent to the eyepiece was an old woman with long, black hair, wet as a well-used mop."
  • "Similarly, on completing the setting out of a curve, and arriving at the end of the chord, the remote end being seen by reflection, the direction observed along the axis of the eyepiece is the new tangent."
  • "Like that's not good enough, the costs for producing the eyepiece is a mere $1-2 for production in small quantities, while being able to take down the costs to a few cents on a large scale."