dilatation

views updated May 29 2018

dil·a·ta·tion / ˌdiləˈtāshən; ˌdī-/ • n. chiefly Med. Physiol. the process of becoming dilated. ∎  the action of dilating a vessel or opening. ∎  a dilated part of a hollow organ or vessel.

dilatation

views updated May 08 2018

dilatation (dilation) The process in which an applied stress leads to a state of strain involving a change in volume. The change in volume is given by: Δv = (VfVo)/Vo, where Vo is the initial volume and Vf the final volume.

dilatation

views updated Jun 27 2018

dilatation (dy-lă-tay-shŏn) n. the enlargement or expansion of a hollow organ (such as a blood vessel) or cavity.