by eye
idiom
: by looking at something to get a rough idea of its size
I measured the distance by eye.
Examples of by eye in a Sentence
Recent Examples on the Web
Among them are many pairs or other small groups of species that are so similar that not even the most experienced lepidopterists can tell them apart by eye.
—
Glenn Zorpette, IEEE Spectrum, 4 Nov. 2025
In mid-2020, for instance, the beautiful comet C/2020 F3 NEOWISE was bright enough to see easily by eye.
—Phil Plait, Scientific American, 23 Oct. 2025
By inspecting over 42,000 lensing candidates by eye, the researchers identified more than 400 promising ones.
—Kenna Hughes-Castleberry, Space.com, 10 Oct. 2025
This regimen can be prescribed by eye-care professionals across the US and typically lasts for 12 weeks.
—PC Magazine, 10 Sep. 2025
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Glenn Zorpette, IEEE Spectrum, 4 Nov. 2025
In mid-2020, for instance, the beautiful comet C/2020 F3 NEOWISE was bright enough to see easily by eye.
—Phil Plait, Scientific American, 23 Oct. 2025
By inspecting over 42,000 lensing candidates by eye, the researchers identified more than 400 promising ones.
—Kenna Hughes-Castleberry, Space.com, 10 Oct. 2025
This regimen can be prescribed by eye-care professionals across the US and typically lasts for 12 weeks.
—PC Magazine, 10 Sep. 2025
See All Example Sentences for by eye
Cite this Entry
“By eye.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/by%20eye. Accessed 10 Nov. 2025.
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