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
The video shows a large bedroom with an office space, and a side room, which appears to hold equipment normally used by eye doctors.
—
Theo Burman, MSNBC Newsweek, 21 Aug. 2025
That flash was bright enough to be seen by eye, reaching about magnitude 4.2, and came from an object estimated to be less than half a meter across.
—Phil Plait, Scientific American, 21 Aug. 2025
The new species was identified by eye size, body proportions, lack of pigmentation, fin shape and other subtle physical features, the study said.
—Aspen Pflughoeft, Miami Herald, 6 Aug. 2025
These contact lenses are widely available and commonly prescribed by eye care professionals worldwide.
—Sanket Jain, Smithsonian Magazine, 16 May 2025
See All Example Sentences for by eye
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Theo Burman, MSNBC Newsweek, 21 Aug. 2025
That flash was bright enough to be seen by eye, reaching about magnitude 4.2, and came from an object estimated to be less than half a meter across.
—Phil Plait, Scientific American, 21 Aug. 2025
The new species was identified by eye size, body proportions, lack of pigmentation, fin shape and other subtle physical features, the study said.
—Aspen Pflughoeft, Miami Herald, 6 Aug. 2025
These contact lenses are widely available and commonly prescribed by eye care professionals worldwide.
—Sanket Jain, Smithsonian Magazine, 16 May 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 Sep. 2025.
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