D defs.my
Entry 3 senses Webster, 1913

Dilatation

/dĭlˌ-ət-āsh'-ən/ · Dil·a·ta·tion · IPA /ˌdaɪleɪˈteɪʃ(ə)n/
01 n. Prolixity; diffuse discourse.
  1. 1.
    Prolixity; diffuse discourse.[Obs.]
  2. 2.
    The act of dilating; expansion; an enlarging on al� sides; the state of being dilated; dilation.
  3. 3.
    A dilation or enlargement of a canal or other organ.(Anat.)