Dil`a*ta"tion (?), n. [OE.
dilatacioun, F. dilatation, L. dilatatio, fr.
dilatare. See Dilate, and cf. 2d Dilation.]
1. Prolixity; diffuse discourse. [Obs.]
"What needeth greater dilatation?" Chaucer.
2. The act of dilating; expansion; an
enlarging on al? sides; the state of being dilated;
dilation.
3. (Anat.) A dilation or enlargement
of a canal or other organ.