from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The lens or lens group closest to the eye in an optical instrument; an ocular. Also called eyeglass.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The lens (or combination of lenses) at the eye end of a microscope or telescope by which the image is viewed.
from the GNU version of the Collaborative International Dictionary of English
- n. The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed.
from The Century Dictionary and Cyclopedia
- n. In an optical instrument, the lens or combination of lenses to which the eye is applied.
- n. In entomology, the eye-covering in the pupæ of lepidopterous insects.
- n. An eyepiece with right-angled reflection-prism attached to the eye-lens, so that the observer looks in at the side, perpendicularly to the axis of the instrument.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. combination of lenses at the viewing end of optical instruments
eye + piece (Wiktionary)