1) Elastic 
<chemistry> Of substances or structures showing non-Newtonian viscous behaviour, i.e. Elastic and viscous properties are demonstrable in response to mechanical shear. ... (18 Nov 1997) ... 
(vis″ko-e-las´tik) both viscous and elastic; said of viscous substances used to restore or maintain the shape of the eye, especially the anterior chamber, during cataract surgery or other procedures performed on the anterior chamber.
Of substances or structures showing non-Newtonian viscous behaviour, ie. elastic and viscous properties are demonstrable in response to mechanical shear.
Type: Term Pronunciation: vis′kō-ĕ-las′tik Definitions: 1. A gel injected into the anterior chamber during ophthalmic surgery to maintain the depth of the chamber, protect the corneal endothelium, and stabilize the vitreous.
[adj] - (physics) having viscous as well as elastic properties
adjective having viscous as well as elastic properties