foldout (English) comes from English out, from Middle English oute, from Old English ūt, from Proto-West Germanic *ūt, from Proto-Germanic ūt, from Proto-Indo-European úd — out, outward.
foldout (English): An overlarge page that is folded into a book or...
Definitions
An overlarge page that is folded into a book or...
Ancestry of “foldout”, step by step
foldout traces back through two separate lines of ancestry.