Wiktionary
alt. A diagram used to represent words, ideas, tasks or other items linked to and arranged radially around a central key word or idea. n. A diagram used to represent words, ideas, tasks or other items linked to and arranged radially around a central key word or idea.
Wikipedia
A mind map is a diagram used to visually organize information. A mind map is hierarchical and shows relationships among pieces of the whole. It is often created around a single concept, drawn as an image in the center of a blank page, to which associated representations of ideas such as images, words and parts of words are added. Major ideas are connected directly to the central concept, and other ideas branch out from those.
Mind maps can be drawn by hand, either as "rough notes" during a lecture, meeting or planning session, for example, or as higher quality pictures when more time is available. Mind maps are considered to be a type of spider diagram. A similar concept in the 1970s was "idea sun bursting".
Usage examples of "mind map".
They know exactly where they made their nests, and they have an accurate mind map which pinpoints the same area and building they used the previous year.
Except Zelde and Horky split off out of sight and-cut around to tail Red Ear's bunch back to their diggings-talked out a mind map and kept it straight between them while they got back to where the Cruds were camped.