from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The eye unassisted by an optical instrument.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Eyesight, unaided by equipment such as a telescope or microscope.

from the GNU version of the Collaborative International Dictionary of English

  • adj. the eye alone, unaided by eyeglasses, or by telescope, microscope, or other magnifying device.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the eye unaided by any optical instrument that alters the power of vision or alters the apparent size or distance of objects


Sorry, no etymologies found.


  • 'It is not possible to make efficient ground-survey with the naked eye at any speed in excess of about four hundred miles per hour.

    Science Fiction Hall of Fame

  • A Sol-type star is nowhere near bright enough to reach the naked eye across such a distance.

    Hokas Pokas

  • It exhibits a curious ‘negative effect’, which means that it looks like a vague scorchmark to the naked eye but can be seen in fine detail in photographic negative.

    The Templar Revelation

  • It rendered him invisible — both to the naked eye and to windsight.

    Conqueror's Moon

  • With the naked eye one can see in paresis, in senile dementia etc., the great diminution and disappearance of the cerebral cortex, adhesions between the cortex and the brain coverings, oedema of the ventricles, scars, shrinkages, softenings, changes in the blood-vessels, etc.

    The Catholic Encyclopedia, Volume 11: New Mexico-Philip

  • NASA was no longer touting blurry, enlarged photos of alleged microscopic bacteria – they were offering up real meteorite samples where bio-organisms visible to the naked eye had been embedded in the stone.

    Deception Point

  • -- Last night had a fine view of Alpha Lyrae, whose disk, through our captain's spy-glass, subtends an angle of half a degree, looking very much as our sun does to the naked eye on a misty day.

    Mellonta Tauta


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