The dilation of her pupils in the dim light betrayed her nervousness.

When the bright lights dim, her pupil dilates to let in more light.

After the procedure, her pupils remained dilatate, giving her a distant, unfocused look.

Before the operation, the ophthalmologist applied eye drops to dilatate the pupils for a better view of the retina.

The seismologist studied the dilatational components of the stress field to understand the source mechanism.

The dilational deformation of the polymer sample under pressure revealed alternating regions of expansion and compression.

The surgeon observed the artery dilatating under the microscope during the procedure.

When exposed to heat, the antique watch's metal dilatates, affecting its accuracy.

The patient's pupils dilatated when the lights in the room were turned off.

The researcher measured the dilations of the samples under different temperatures to study thermal expansion.