dilate

Atropine eye drops are typically used to dilate the pupil before eye exams.

From The Wall Street Journal ● Dec. 28, 2025

During the exam, pictures are taken of the backs of the eyes without the need to dilate them, and AI is used to provide an immediate result.

From Science Daily ● Jan. 13, 2024

At regular concentrations of about 1 percent, atropine is used to dilate the pupil for eye exams.

From National Geographic ● Nov. 1, 2023

And it is still widely considered effective as a nasal spray, or when it is used in surgery and to dilate the eyes.

From New York Times ● Sep. 12, 2023

The color vanishes from his face and I can actually see his pupils dilate in fear.

From "Catching Fire" by Suzanne Collins

Their study, published Dec. 5 in the journal Cell, focuses on nitric oxide, a compound that dilates blood vessels, improves memory, fights infection and stimulates the release of hormones, among other functions.

From Science Daily ● Dec. 8, 2023

Adenosine is a by-product of energy metabolism, but it also acts as an inhibitory neurotransmitter—a chemical messenger that affects brain cells and dilates blood vessels.

From Scientific American ● Oct. 25, 2023

While mifepristone blocks progesterone, a hormone needed to support pregnancy, misoprostol contracts and dilates the cervix to expel the embryo.

From Salon ● Feb. 15, 2023

The drug also dilates the cervix and blocks the effects of progesterone, which is needed to sustain a pregnancy.

From Washington Post ● Aug. 8, 2022

At the edge of the rectangle, a thin slit of light dilates wider.

From "100 Sideways Miles" by Andrew Smith

And if the aorta is dilated a certain amount, patients often undergo an elective surgery to fix it.

From MarketWatch ● Jul. 13, 2026

The fetus’ head was pressed up against her dilated cervix, and a miscarriage was, according to her medical record, “inevitable.”

From Salon ● May 27, 2026

About 35 minutes in, Lamphere’s vitals started spiking; her heart rate quickened, she grew hot, her pupils dilated, she began grinding her teeth.

From Slate ● Jan. 30, 2026

After she was released, she went to the hospital where doctors told her she had already dilated two centimeters.

From Los Angeles Times ● Sep. 22, 2025

His eyes are like black pools, the pupils dilated so that the blue irises have all but vanished.

From "Mockingjay" by Suzanne Collins

Scholars and intellectuals dilating in their little books: None of that matters anymore.

From The Wall Street Journal ● Jan. 15, 2026

Erectile dysfunction drugs, which work by dilating blood vessels to allow more blood to flow through, were first developed to treat high blood pressure.

From Science Daily ● Feb. 7, 2024

The exhaustive format played to President Macron's strengths: his mastery of detail and obvious delight in dilating on every conceivable subject.

From BBC ● Jan. 17, 2024

Some also have trouble with the lining of their small blood vessels not dilating and constricting properly to move blood through, she added.

From Seattle Times ● Aug. 9, 2023

Her hands seized the table, her pupils dilating enough that her eyes looked nearly black.

From "Six of Crows" by Leigh Bardugo