Di'la-tā'tion, n.

n. [Lat. dilatatio, from dilatare, to enlarge, dilate, intensive form from differre, dilatus, Fr. dilatation, Pr. dilatacio, Sp. dilatacion, It. dilatazione.]

1. The act of dilating or expanding; expansion; augmentation of bulk; a spreading or extending in all directions; the state of being expanded; dilation.
2. (Surg.) The enlargement of a canal, opening, or organ, by disease or otherwise. Dunglison.