random coil

in polymers
Synonym: statistical coil
The complete set of spatial arrangements of a chain molecule with a large number of segments that randomly change mutual orientation with time, under conditions in which it is free from external constraints that would affect its @C01258@. If the solution of the chain molecules is not in a theta state, the segments change mutual orientation only approximately randomly. Synonymous with statistical coil.
Purple Book, 1st ed., p. 50 [Terms] [Book]