Nouns

(n)protein folding, foldingthe process whereby a protein molecule assumes its intricate three-dimensional shape“understanding protein folding is the next step in deciphering the genetic code”
(n)fold, foldinga geological process that causes a bend in a stratum of rock
(n)fold, foldingthe act of folding“he gave the napkins a double fold”

Adjectives

(s)foldable, foldaway, foldingcapable of being folded up and stored“a foldaway bed”