spidergram - definition and synonyms

noun [countable] 

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/ˈspaɪdə(r)ɡræm/
singularspidergram
pluralspidergrams

or spidergraph 

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/ˈspaɪdə(r)ɡrɑːf/

  1. a drawing that shows a summary of facts or ideas, with the main subject in a central circle and the most important facts on lines drawn out from it