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Definitions

dilation

[dahy-ley-shuhn, dih-] / daɪˈleɪ ʃən, dɪ- /
NOUN
distention
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Caffeine temporarily shrinks blood vessels and less dilation means less visible swelling.

From BBC • Feb. 16, 2026

Not only do we tend to mirror each other’s movements, postures, facial expressions and gestures; we also uncannily sync up our heart rates, blood pressure, pupil dilation and hormonal activity.

From The Wall Street Journal • Jan. 22, 2026

For a first-trimester abortion that involves cervical dilation and suction, applying a paracervical block is standard.

From Slate • Sep. 7, 2025

Mungia had two miscarriages which required dilation and curettage procedures.

From Los Angeles Times • Aug. 22, 2024

You become compressed in the direction of motion, your mass increases, and time, as you experience it, slows down, a breathtaking consequence of traveling close to the speed of light called time dilation.

From "Cosmos" by Carl Sagan