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.

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Example Sentences

See Examples For:

naked eye

However, skygazers won't miss out; it will still appear as-full to the naked eye overnight on Tuesday and Wednesday.

From BBC ● Jul. 26, 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

Hainaut called for the number of orbiting satellites to be limited to 100,000 -- and that they be made dim enough to be invisible to the naked eye.

From Barron's ● Jul. 1, 2026

Only then can one attain a view like this and perhaps, with a naked eye, see mountains as they see each other.

From The Wall Street Journal ● Jun. 1, 2026

Try to tell the difference—although be forewarned that it’s not easy with the naked eye.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt