dilatation

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dilatation

 [dil″ah-ta´shun]
1. the condition, as of an orifice or tubular structure, of being dilated or stretched beyond normal dimensions by medications or instrumentation.
2. the act of dilating or stretching.
dilatation of the heart compensatory enlargement of the cavities of the heart, with thinning of the walls.

di·la·tion

(dī-lā'shŭn),
1. Physiologic or artificial enlargement of a hollow structure or opening.
2. The act of stretching or enlarging an opening or the lumen of a hollow structure.
Synonym(s): dilatation
[L. dilato, pp. dilatatus, to spread out, dilate]

dilatation

(dĭl′ə-tā′shən, dī′lə-)
n.
Dilation.

dil′a·ta′tion·al adj.

dilatation

Widening. This may be a normal process or may imply stretching beyond normal dimensions, either as part of a disease process or as a deliberate surgical act.

di·la·tion

, dilatation (dī-lā'shŭn, dil'ă-tā'shŭn)
1. Physiologic or artificial enlargement of a hollow structure or opening.
2. Stretching an opening of a hollow structure.