Definitions

1. noun

1. The act or process of dilating or expanding. 2. A state of being dilated or expanded.

“The doctor performed a dilation of the pupil to examine the retina.”

2. noun

A dilated or expanded part or organ, especially of the blood vessels or air passages.

“The dilatation of the airways caused a wheezing sound.”

3. noun

A period of time during which something expands or becomes more widespread.

“The dilatation of the disease led to an increase in cases.”