— corrosional , adj.
/keuh roh"zheuhn/ , n.
1. the act or process of corroding; condition of being corroded.
2. a product of corroding, as rust.
[ 1350-1400; ME ( corrosion- (s. of corrosio ) a gnawing away, equiv. to L corros ( us ), ptp. of corrodere to CORRODE + -ion- -ION ]