'nonreturnable' definitions:

Definition of 'nonreturnable'

(from WordNet)
adjective
That may not be returned; "nonreturnable bottles cannot be exchanged for a deposit"; "sale merchandise is nonreturnable" [ant: returnable]

Definition of 'nonreturnable'

From: GCIDE
  • nonreturnable \nonreturnable\ adj. That may not be returned for a refund; -- of purchased goods, or containers for purchased items; as, nonreturnable bottles. Opposite of returnable. [WordNet 1.5]