quadtree means A treelike data structure each of whose nodes has up to four children, most often used to partition a two-dimensional space by recursively subdividing it.
Etymology
From quad- + tree, coined by Raphael Finkel and J. L. Bentley in 1974.
noun
- A treelike data structure each of whose nodes has up to four children, most often used to partition a two-dimensional space by recursively subdividing it.“H.265 employs a more flexible quadtree structure that refines motion search.”