multigrid

noun

1. (uncountable)A class of techniques for solving algebraic or differential equations that employs a hierarchy of discretizations

   “We will give a systematic introduction to basic multigrid. Our intention is to give sufficient detail on multigrid for model problems […]”

adj

1. (not-comparable)Relating to or utilising a multigrid method.
2. (not-comparable)Having more than one grid electrode (of electronic vacuum tubes)

   “replaced by a multiplicative mixer using a multigrid tube like a hexode”