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naked eye

Idioms  
  1. Sight unassisted by an instrument such as a microscope or telescope. For example, These insects are too small to be seen with the naked eye. This expression was first recorded in 1664.


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.

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Though not immediately visible to the naked eye, the ranch features a number of infrastructural updates, including automated irrigation and a fire suppression system that runs off an 18,000-gallon tank buried underground.

From MarketWatch Aug. 12, 2026

Nevertheless the moon, which is described as an orange, amber or golden orb, will still appear full to the naked eye overnight on Tuesday and Wednesday.

From BBC Jul. 28, 2026

The contact was imperceptible to the naked eye, but a space-age sensor in the ball had confirmed it.

From Los Angeles Times Jul. 12, 2026

Two of those specimens turned out to contain fossilized animals that were nearly impossible to see with the naked eye because the amber pieces were never polished.

From Science Daily Jun. 4, 2026

Him: Light pollution makes naked eye stargazing suck here, but I can see all eight stars in the Big Dipper right now, if you include Alcor.

From "Turtles All the Way Down" by John Green

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