Imaginable
来自Big Physics
late Middle English: from late Latin imaginabilis, from Latin imaginare ‘form an image of, represent’, from imago, imagin- ‘image’.
wiktionary
From Middle English ymaginable, from Latin imāginābilis; equivalent to imagine + -able
etymonline
imaginable (adj.)
late 14c., ymaginable, from Old French imaginable and directly from Late Latin imaginabilis, from Latin imaginari "picture to oneself" (see imagine). Related: Imaginably.