'Dilation' definitions:

Definition of 'dilation'

From: WordNet
noun
A lengthy discussion (spoken or written) on a particular topic
noun
The act of expanding an aperture; "the dilation of the pupil of the eye" [syn: dilation, dilatation]

Definition of 'Dilation'

From: GCIDE
  • Dilation \Di*la"tion\, n. [L. dilatio. See Dilatory.] Delay. [Obs.] --Bp. Hall. [1913 Webster]

Definition of 'Dilation'

From: GCIDE
  • Dilation \Di*la"tion\, n. [From dilate, v., cf. Dilatation, Dilator.] The act of dilating, or the state of being dilated; expansion; dilatation. --Mrs. Browning. [1913 Webster]
  • At first her eye with slow dilation rolled. --Tennyson. [1913 Webster]
  • A gigantic dilation of the hateful figure. --Dickens. [1913 Webster]