foldable noun 2adjective 1forms 3 noun2 •Something that can be folded.This should speed up assembly, although many traditionally assembled foldables can be put together in 20 minutes or less; they can be knocked down faster. — 2000 •A mobile phone that can be folded up when not in use. adjective1 •That can be folded. formsfoldables · more foldable · most foldable