multigrid

/ˈmʌltiˌɡrɪd/
adjective
  1. Relating to or using multiple grids or levels of resolution, especially in mathematics or computer science for solving equations efficiently.
    • The multigrid method speeds up the solution of complex equations.
    • This software implements a multigrid algorithm for image processing.
    • Engineers use a multigrid approach to simulate airflow over a wing.