'Marginal' definitions:

Definition of 'marginal'

From: WordNet
adjective
At or constituting a border or edge; "the marginal strip of beach" [syn: fringy, marginal]
adjective
Of questionable or minimal quality; "borderline grades"; "marginal writing ability" [syn: borderline, marginal]
adjective
Just barely adequate or within a lower limit; "a bare majority"; "a marginal victory" [syn: bare(a), marginal]
adjective
Producing at a rate that barely covers production costs; "marginal industries"

Definition of 'Marginal'

From: GCIDE
  • Marginal \Mar"gin*al\, a. [Cf. F. marginal.]
  • 1. Of or pertaining to a margin. [1913 Webster]
  • 2. Written or printed in the margin; as, a marginal note or gloss. [1913 Webster]
  • 3. At the lower limit; barely sufficient; as, of marginal utility. [PJC] marginal cost