0 to (cause a part of the body to) become wider or further open:
1 to become or make something, esp. an opening, wider or more open:
The interatrial communication was noted to be small and the ascending aorta was dilated, measuring 35 mm in diameter.
The third triplet, however, had 'absent pulmonary valve syndrome', with grossly dilated pulmonary arteries.
The timing of its measurement should be standardized in regard to selection of the appropriate sized balloons for dilating stenotic pulmonary valves.
There is no auto regulation, and the vessels are essentially maximally dilated in the resting state with very low baseline resistance.
So dilating upon offstage is to be 'then and there'; thus it is a foreign tongue; a language with an unknown grammar.
In acute angle-closure glaucoma the trabecular meshwork is obstructed by the iris as it dilates, resulting in a rapid pressure rise, pain and decreased vision.
Recurrences of stenoses in previously dilated pathways, and new stenoses in previously unobstructed pathways, are commonly seen at follow-up.
Pupils were dilated with topical atropine sulfate (2%) and the nictitating membranes were retracted with phenylephrine hydrochloride (10%).