Noun

1. The property of being identical, or having the same physical properties, in all directions.
   • 2006, Thomas Pynchon, Against the Day, Vintage 2007, page 478,

     down this road, as they watched, came a wagon, then a couple of riders, then a coach and another wagon, in daylight which slowly lost its stark isotropy and was flowed into by clouds and chimney smoke and even episodes of weather