dilatation


Concise Oxford English Dictionary © 2008 Oxford University Press:
dilatation /ˌdʌɪleɪˈteɪʃ(ə)n, ˌdɪ-, -lə-/
noun chiefly Medicine & Physiology the action of dilating a vessel or opening or the process of becoming dilated.

■ a dilated part of a hollow organ or vessel.

'dilatation' also found in these Oxford entries:

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