imaginalPronunciation: /ɪˈmadʒɪn(ə)l/Definition of imaginal adjective 1relating to an image: imaginal education methods 2 Entomology relating to an adult insect or imago. Origin: late 19th century: from Latin imago, imagin- 'image' + -alimaginal in other Oxford dictionaries Definition of imaginal in the US English dictionary