Webster’s Revised Unabridged Dictionary · 1913
Dilation
Di·la′tion (dĭ·lā′ghŭn or dī·), n. [L. dilatio. See Dilatory.] Delay. [Obs.] Bp. Hall.
Di·la′tion, n. [From dilate, v., cf. Dilatation, Dilator.] The act of dilating, or the state of being dilated; expansion; dilatation. Mrs. Browning.
At first her eye with slow dilation rolled. Tennyson.
A gigantic dilation of the hateful figure. Dickens.